55877856 has 48 divisors (see below), whose sum is σ = 153062784. Its totient is φ = 17815424.

The previous prime is 55877837. The next prime is 55877873. The reversal of 55877856 is 65877855.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 55877799 and 55877808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10446 + ... + 14861.

It is an arithmetic number, because the mean of its divisors is an integer number (3188808).

Almost surely, 2^55877856 is an apocalyptic number.

It is an amenable number.

55877856 is an abundant number, since it is smaller than the sum of its proper divisors (97184928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55877856 is a wasteful number, since it uses less digits than its factorization.

55877856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25343 (or 25335 counting only the distinct ones).

The product of its digits is 2352000, while the sum is 51.

The square root of 55877856 is about 7475.1492292796. The cubic root of 55877856 is about 382.3078756623.

Subtracting 55877856 from its reverse (65877855), we obtain a palindrome (9999999).

The spelling of 55877856 in words is "fifty-five million, eight hundred seventy-seven thousand, eight hundred fifty-six".