55697332 has 12 divisors (see below), whose sum is σ = 97686820. Its totient is φ = 27786816.

The previous prime is 55697309. The next prime is 55697333. The reversal of 55697332 is 23379655.

It can be written as a sum of positive squares in 2 ways, for example, as 39488656 + 16208676 = 6284^2 + 4026^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55697333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13407 + ... + 17062.

Almost surely, 2^55697332 is an apocalyptic number.

It is an amenable number.

55697332 is a deficient number, since it is larger than the sum of its proper divisors (41989488).

55697332 is a wasteful number, since it uses less digits than its factorization.

55697332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30930 (or 30928 counting only the distinct ones).

The product of its digits is 170100, while the sum is 40.

The square root of 55697332 is about 7463.0645180114. The cubic root of 55697332 is about 381.8957254929.

The spelling of 55697332 in words is "fifty-five million, six hundred ninety-seven thousand, three hundred thirty-two".