55187075 has 6 divisors (see below), whose sum is σ = 68432004. Its totient is φ = 44149640.

The previous prime is 55187063. The next prime is 55187101. The reversal of 55187075 is 57078155.

It is not a de Polignac number, because 55187075 - 2⁴ = 55187059 is a prime.

It is a super-2 number, since 2×55187075² = 6091226494111250, which contains 22 as substring.

It is a Duffinian number.

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 5 ways as a sum of consecutive naturals, for example, 1103717 + ... + 1103766.

It is an arithmetic number, because the mean of its divisors is an integer number (11405334).

Almost surely, 2^55187075 is an apocalyptic number.

55187075 is a deficient number, since it is larger than the sum of its proper divisors (13244929).

55187075 is a wasteful number, since it uses less digits than its factorization.

55187075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207493 (or 2207488 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 38.

The square root of 55187075 is about 7428.8003742192. The cubic root of 55187075 is about 380.7259322782.

The spelling of 55187075 in words is "fifty-five million, one hundred eighty-seven thousand, seventy-five".