55880565 has 32 divisors (see below), whose sum is σ = 96647040. Its totient is φ = 27407616.

The previous prime is 55880563. The next prime is 55880567. The reversal of 55880565 is 56508855.

It is an interprime number because it is at equal distance from previous prime (55880563) and next prime (55880567).

It is not a de Polignac number, because 55880565 - 2¹ = 55880563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55880563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98974 + ... + 99536.

It is an arithmetic number, because the mean of its divisors is an integer number (3020220).

Almost surely, 2^55880565 is an apocalyptic number.

It is an amenable number.

55880565 is a deficient number, since it is larger than the sum of its proper divisors (40766475).

55880565 is a wasteful number, since it uses less digits than its factorization.

55880565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093.

The product of its (nonzero) digits is 240000, while the sum is 42.

The square root of 55880565 is about 7475.3304274794. The cubic root of 55880565 is about 382.3140537525.

The spelling of 55880565 in words is "fifty-five million, eight hundred eighty thousand, five hundred sixty-five".