55512306 has 24 divisors (see below), whose sum is σ = 122548140. Its totient is φ = 18154656.

The previous prime is 55512299. The next prime is 55512329. The reversal of 55512306 is 60321555.

It can be written as a sum of positive squares in 2 ways, for example, as 54686025 + 826281 = 7395^2 + 909^2 .

It is a super-2 number, since 2×55512306² = 6163232234875272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55512306.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28141 + ... + 30048.

Almost surely, 2^55512306 is an apocalyptic number.

55512306 is an abundant number, since it is smaller than the sum of its proper divisors (67035834).

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

55512306 is a wasteful number, since it uses less digits than its factorization.

55512306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58250 (or 58247 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 55512306 is about 7450.6580917393. The cubic root of 55512306 is about 381.4723717143.

Subtracting 55512306 from its reverse (60321555), we obtain a square (4809249 = 2193²).

The spelling of 55512306 in words is "fifty-five million, five hundred twelve thousand, three hundred six".