55000187 has 6 divisors (see below), whose sum is σ = 60454884. Its totient is φ = 50000060.

The previous prime is 55000181. The next prime is 55000189. The reversal of 55000187 is 78100055.

It is not a de Polignac number, because 55000187 - 2¹⁸ = 54738043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55000181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 227153 + ... + 227394.

It is an arithmetic number, because the mean of its divisors is an integer number (10075814).

Almost surely, 2^55000187 is an apocalyptic number.

55000187 is a deficient number, since it is larger than the sum of its proper divisors (5454697).

55000187 is a wasteful number, since it uses less digits than its factorization.

55000187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454569 (or 454558 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 55000187 is about 7416.2110946224. The cubic root of 55000187 is about 380.2956770769.

The spelling of 55000187 in words is "fifty-five million, one hundred eighty-seven", and thus it is an aban number.