55699236 has 18 divisors (see below), whose sum is σ = 140795382. Its totient is φ = 18566400.

The previous prime is 55699201. The next prime is 55699247. The reversal of 55699236 is 63299655.

55699236 is a `hidden beast` number, since 556 + 9 + 92 + 3 + 6 = 666.

55699236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 48441600 + 7257636 = 6960^2 + 2694^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 55699191 and 55699200.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 773565 + ... + 773636.

Almost surely, 2^55699236 is an apocalyptic number.

It is an amenable number.

55699236 is an abundant number, since it is smaller than the sum of its proper divisors (85096146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55699236 is a wasteful number, since it uses less digits than its factorization.

55699236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547211 (or 1547206 counting only the distinct ones).

The product of its digits is 437400, while the sum is 45.

The square root of 55699236 is about 7463.1920784608. The cubic root of 55699236 is about 381.9000771147.

The spelling of 55699236 in words is "fifty-five million, six hundred ninety-nine thousand, two hundred thirty-six".