55877855 has 16 divisors (see below), whose sum is σ = 74853504. Its totient is φ = 39691680.

The previous prime is 55877837. The next prime is 55877873.

It is a happy number.

55877855 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (55877837) and next prime (55877873).

It is not a de Polignac number, because 55877855 - 2⁶ = 55877791 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9449 + ... + 14178.

It is an arithmetic number, because the mean of its divisors is an integer number (4678344).

Almost surely, 2^55877855 is an apocalyptic number.

55877855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55877855 is a deficient number, since it is larger than the sum of its proper divisors (18975649).

55877855 is a wasteful number, since it uses less digits than its factorization.

55877855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23686.

The product of its digits is 1960000, while the sum is 50.

The square root of 55877855 is about 7475.1491623913. The cubic root of 55877855 is about 382.3078733817.

The spelling of 55877855 in words is "fifty-five million, eight hundred seventy-seven thousand, eight hundred fifty-five".