55855765 has 16 divisors (see below), whose sum is σ = 77575680. Its totient is φ = 37814400.

The previous prime is 55855759. The next prime is 55855853. The reversal of 55855765 is 56755855.

It is not a de Polignac number, because 55855765 - 2¹¹ = 55853717 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, 7336 + ... + 12865.

It is an arithmetic number, because the mean of its divisors is an integer number (4848480).

Almost surely, 2^55855765 is an apocalyptic number.

It is an amenable number.

55855765 is a deficient number, since it is larger than the sum of its proper divisors (21719915).

55855765 is a wasteful number, since it uses less digits than its factorization.

55855765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20292.

The product of its digits is 1050000, while the sum is 46.

The square root of 55855765 is about 7473.6714538438. The cubic root of 55855765 is about 382.2574879232.

The spelling of 55855765 in words is "fifty-five million, eight hundred fifty-five thousand, seven hundred sixty-five".