55012512 has 24 divisors (see below), whose sum is σ = 144408096. Its totient is φ = 18337472.

The previous prime is 55012511. The next prime is 55012537. The reversal of 55012512 is 21521055.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (55012511) 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, 286428 + ... + 286619.

It is an arithmetic number, because the mean of its divisors is an integer number (6017004).

Almost surely, 2^55012512 is an apocalyptic number.

It is an amenable number.

55012512 is an abundant number, since it is smaller than the sum of its proper divisors (89395584).

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

55012512 is a wasteful number, since it uses less digits than its factorization.

55012512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573060 (or 573052 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 55012512 is about 7417.0419979935. The cubic root of 55012512 is about 380.3240817934.

Adding to 55012512 its reverse (21521055), we get a palindrome (76533567).

The spelling of 55012512 in words is "fifty-five million, twelve thousand, five hundred twelve".