55609155 has 24 divisors (see below), whose sum is σ = 110159712. Its totient is φ = 25421184.

The previous prime is 55609139. The next prime is 55609171. The reversal of 55609155 is 55190655.

55609155 is a `hidden beast` number, since 5 + 560 + 91 + 5 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (55609139) and next prime (55609171).

It is not a de Polignac number, because 55609155 - 2⁴ = 55609139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87954 + ... + 88583.

It is an arithmetic number, because the mean of its divisors is an integer number (4589988).

Almost surely, 2^55609155 is an apocalyptic number.

55609155 is a deficient number, since it is larger than the sum of its proper divisors (54550557).

55609155 is a wasteful number, since it uses less digits than its factorization.

55609155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176555 (or 176552 counting only the distinct ones).

The product of its (nonzero) digits is 33750, while the sum is 36.

The square root of 55609155 is about 7457.1546182173. The cubic root of 55609155 is about 381.6940868367.

The spelling of 55609155 in words is "fifty-five million, six hundred nine thousand, one hundred fifty-five".