55765549 has 16 divisors (see below), whose sum is σ = 65968000. Its totient is φ = 46142784.

The previous prime is 55765537. The next prime is 55765553. The reversal of 55765549 is 94556755.

It is a cyclic number.

It is not a de Polignac number, because 55765549 - 2⁵ = 55765517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55765499 and 55765508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55765519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35227 + ... + 36775.

It is an arithmetic number, because the mean of its divisors is an integer number (4123000).

Almost surely, 2^55765549 is an apocalyptic number.

It is an amenable number.

55765549 is a deficient number, since it is larger than the sum of its proper divisors (10202451).

55765549 is a wasteful number, since it uses less digits than its factorization.

55765549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732.

The product of its digits is 945000, while the sum is 46.

The square root of 55765549 is about 7467.6334269968. The cubic root of 55765549 is about 382.0515746817.

The spelling of 55765549 in words is "fifty-five million, seven hundred sixty-five thousand, five hundred forty-nine".