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55422455 = 5111007681
BaseRepresentation
bin1101001101101…
…0110111110111
310212021202022112
43103122313313
5103142004310
65255521235
71242040334
oct323326767
9125252275
1055422455
1129314790
121668921b
13b63656a
14750998b
154ceb705

55422455 has 8 divisors (see below), whose sum is σ = 72553104. Its totient is φ = 40307200.

The previous prime is 55422443. The next prime is 55422491.

It can be divided in two parts, 5542 and 2455, that added together give a palindrome (7997).

55422455 is nontrivially palindromic in base 10.

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

It is a de Polignac number, because none of the positive numbers 2k-55422455 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503786 + ... + 503895.

It is an arithmetic number, because the mean of its divisors is an integer number (9069138).

Almost surely, 255422455 is an apocalyptic number.

55422455 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55422455 is a deficient number, since it is larger than the sum of its proper divisors (17130649).

55422455 is a wasteful number, since it uses less digits than its factorization.

55422455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007697.

The product of its digits is 40000, while the sum is 32.

The square root of 55422455 is about 7444.6259140403. The cubic root of 55422455 is about 381.2664463030.

The spelling of 55422455 in words is "fifty-five million, four hundred twenty-two thousand, four hundred fifty-five".

Divisors: 1 5 11 55 1007681 5038405 11084491 55422455