55637697 has 16 divisors (see below), whose sum is σ = 76684608. Its totient is φ = 35857920.

The previous prime is 55637663. The next prime is 55637717. The reversal of 55637697 is 79673655.

It is a happy number.

55637697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55637697 - 2¹⁵ = 55604929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55637627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11898 + ... + 15900.

It is an arithmetic number, because the mean of its divisors is an integer number (4792788).

Almost surely, 2^55637697 is an apocalyptic number.

It is an amenable number.

55637697 is a deficient number, since it is larger than the sum of its proper divisors (21046911).

55637697 is a wasteful number, since it uses less digits than its factorization.

55637697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4160.

The product of its digits is 1190700, while the sum is 48.

The square root of 55637697 is about 7459.0681053333. The cubic root of 55637697 is about 381.7593785396.

The spelling of 55637697 in words is "fifty-five million, six hundred thirty-seven thousand, six hundred ninety-seven".