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54221400423 = 32193153192991
BaseRepresentation
bin110010011111110110…
…001110100101100111
312011221210010112100200
4302133312032211213
51342021134303143
640524200441543
73626441204421
oct623766164547
9164853115320
1054221400423
1120aa4626733
12a6127792b3
1351614cc3b8
1428a5237811
1516252a01d3
hexc9fd8e967

54221400423 has 48 divisors (see below), whose sum is σ = 86707445760. Its totient is φ = 32514955200.

The previous prime is 54221400413. The next prime is 54221400463. The reversal of 54221400423 is 32400412245.

It is not a de Polignac number, because 54221400423 - 214 = 54221384039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54221400403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 184458 + ... + 377448.

It is an arithmetic number, because the mean of its divisors is an integer number (1806405120).

Almost surely, 254221400423 is an apocalyptic number.

54221400423 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

54221400423 is a deficient number, since it is larger than the sum of its proper divisors (32486045337).

54221400423 is a wasteful number, since it uses less digits than its factorization.

54221400423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193100 (or 193097 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 54221400423 its reverse (32400412245), we get a palindrome (86621812668).

The spelling of 54221400423 in words is "fifty-four billion, two hundred twenty-one million, four hundred thousand, four hundred twenty-three".

Divisors: 1 3 9 19 31 53 57 93 159 171 279 477 589 1007 1643 1767 3021 4929 5301 9063 14787 31217 93651 192991 280953 578973 1736919 3666829 5982721 10228523 11000487 17948163 30685569 33001461 53844489 92056707 113671699 194341937 317084213 341015097 583025811 951252639 1023045291 1749077433 2853757917 6024600047 18073800141 54221400423