55101087 has 8 divisors (see below), whose sum is σ = 81631280. Its totient is φ = 36734040.

The previous prime is 55101071. The next prime is 55101107. The reversal of 55101087 is 78010155.

55101087 is a `hidden beast` number, since 551 + 0 + 108 + 7 = 666.

It is not a de Polignac number, because 55101087 - 2⁴ = 55101071 is a prime.

It is a super-2 number, since 2×55101087² = 6072259577163138, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2040781 = 55101087 / (5 + 5 + 1 + 0 + 1 + 0 + 8 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55101087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55101037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020364 + ... + 1020417.

It is an arithmetic number, because the mean of its divisors is an integer number (10203910).

Almost surely, 2^55101087 is an apocalyptic number.

55101087 is a deficient number, since it is larger than the sum of its proper divisors (26530193).

55101087 is a wasteful number, since it uses less digits than its factorization.

55101087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040790 (or 2040784 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 55101087 is about 7423.0106425897. The cubic root of 55101087 is about 380.5280907887.

The spelling of 55101087 in words is "fifty-five million, one hundred one thousand, eighty-seven".