55575575 has 24 divisors (see below), whose sum is σ = 76434096. Its totient is φ = 39744000.

The previous prime is 55575563. The next prime is 55575587. The reversal of 55575575 is 57557555.

It is an interprime number because it is at equal distance from previous prime (55575563) and next prime (55575587).

It is not a de Polignac number, because 55575575 - 2⁶ = 55575511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15119 + ... + 18431.

It is an arithmetic number, because the mean of its divisors is an integer number (3184754).

Almost surely, 2^55575575 is an apocalyptic number.

55575575 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55575575 is a deficient number, since it is larger than the sum of its proper divisors (20858521).

55575575 is a wasteful number, since it uses less digits than its factorization.

55575575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395 (or 3390 counting only the distinct ones).

The product of its digits is 765625, while the sum is 44.

The square root of 55575575 is about 7454.9027491980. The cubic root of 55575575 is about 381.6172417666.

The spelling of 55575575 in words is "fifty-five million, five hundred seventy-five thousand, five hundred seventy-five".