55542761 has 4 divisors (see below), whose sum is σ = 55558800. Its totient is φ = 55526724.

The previous prime is 55542749. The next prime is 55542763. The reversal of 55542761 is 16724555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55542761 - 2²² = 51348457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55542763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431 + ... + 10548.

It is an arithmetic number, because the mean of its divisors is an integer number (13889700).

Almost surely, 2^55542761 is an apocalyptic number.

It is an amenable number.

55542761 is a deficient number, since it is larger than the sum of its proper divisors (16039).

55542761 is a wasteful number, since it uses less digits than its factorization.

55542761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16038.

The product of its digits is 42000, while the sum is 35.

The square root of 55542761 is about 7452.7015906985. The cubic root of 55542761 is about 381.5421197155.

The spelling of 55542761 in words is "fifty-five million, five hundred forty-two thousand, seven hundred sixty-one".