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54407142021 = 361297306787
BaseRepresentation
bin110010101010111010…
…110001101010000101
312012102201122011221010
4302222322301222011
51342411212021041
640554433512433
73634155035211
oct625272615205
9165381564833
1054407142021
112108a460091
12a664a12719
135190b3377b
1428c1b87941
15163673ea16
hexcaaeb1a85

54407142021 has 8 divisors (see below), whose sum is σ = 73732083424. Its totient is φ = 35676814320.

The previous prime is 54407142019. The next prime is 54407142073. The reversal of 54407142021 is 12024170445.

54407142021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54407142021 - 21 = 54407142019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54407142021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54407142821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148653211 + ... + 148653576.

It is an arithmetic number, because the mean of its divisors is an integer number (9216510428).

Almost surely, 254407142021 is an apocalyptic number.

It is an amenable number.

54407142021 is a deficient number, since it is larger than the sum of its proper divisors (19324941403).

54407142021 is a wasteful number, since it uses less digits than its factorization.

54407142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297306851.

The product of its (nonzero) digits is 8960, while the sum is 30.

The spelling of 54407142021 in words is "fifty-four billion, four hundred seven million, one hundred forty-two thousand, twenty-one".

Divisors: 1 3 61 183 297306787 891920361 18135714007 54407142021