55061565 has 64 divisors (see below), whose sum is σ = 99574272. Its totient is φ = 25804800.

The previous prime is 55061557. The next prime is 55061569. The reversal of 55061565 is 56516055.

It is not a de Polignac number, because 55061565 - 2³ = 55061557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55061569) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 567597 + ... + 567693.

It is an arithmetic number, because the mean of its divisors is an integer number (1555848).

Almost surely, 2^55061565 is an apocalyptic number.

It is an amenable number.

55061565 is a deficient number, since it is larger than the sum of its proper divisors (44512707).

55061565 is a wasteful number, since it uses less digits than its factorization.

55061565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 55061565 is about 7420.3480376597. The cubic root of 55061565 is about 380.4370893877.

The spelling of 55061565 in words is "fifty-five million, sixty-one thousand, five hundred sixty-five".