55575537 has 4 divisors (see below), whose sum is σ = 74100720. Its totient is φ = 37050356.

The previous prime is 55575523. The next prime is 55575563. The reversal of 55575537 is 73557555.

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 55575537 - 2¹¹ = 55573489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55575587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9262587 + ... + 9262592.

It is an arithmetic number, because the mean of its divisors is an integer number (18525180).

Almost surely, 2^55575537 is an apocalyptic number.

It is an amenable number.

55575537 is a deficient number, since it is larger than the sum of its proper divisors (18525183).

55575537 is a wasteful number, since it uses less digits than its factorization.

55575537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18525182.

The product of its digits is 459375, while the sum is 42.

The square root of 55575537 is about 7454.9002005392. The cubic root of 55575537 is about 381.6171547892.

The spelling of 55575537 in words is "fifty-five million, five hundred seventy-five thousand, five hundred thirty-seven".