55698388 has 12 divisors (see below), whose sum is σ = 98036820. Its totient is φ = 27687872.

The previous prime is 55698361. The next prime is 55698427. The reversal of 55698388 is 88389655.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52969284 + 2729104 = 7278^2 + 1652^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39553 + ... + 40936.

It is an arithmetic number, because the mean of its divisors is an integer number (8169735).

Almost surely, 2^55698388 is an apocalyptic number.

It is an amenable number.

55698388 is a deficient number, since it is larger than the sum of its proper divisors (42338432).

55698388 is a wasteful number, since it uses less digits than its factorization.

55698388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80666 (or 80664 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 52.

The square root of 55698388 is about 7463.1352660929. The cubic root of 55698388 is about 381.8981390097.

The spelling of 55698388 in words is "fifty-five million, six hundred ninety-eight thousand, three hundred eighty-eight".