55156455 has 48 divisors (see below), whose sum is σ = 99282144. Its totient is φ = 28304640.

The previous prime is 55156441. The next prime is 55156499. The reversal of 55156455 is 55465155.

55156455 is a `hidden beast` number, since 5 + 5 + 1 + 5 + 645 + 5 = 666.

It is not a de Polignac number, because 55156455 - 2⁹ = 55155943 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 261300 + ... + 261510.

It is an arithmetic number, because the mean of its divisors is an integer number (2068378).

Almost surely, 2^55156455 is an apocalyptic number.

55156455 is a deficient number, since it is larger than the sum of its proper divisors (44125689).

55156455 is a wasteful number, since it uses less digits than its factorization.

55156455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 413 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 55156455 is about 7426.7391902503. The cubic root of 55156455 is about 380.6555052516.

It can be divided in two parts, 55156 and 455, that added together give a triangular number (55611 = T₃₃₃).

The spelling of 55156455 in words is "fifty-five million, one hundred fifty-six thousand, four hundred fifty-five".