55255512 has 32 divisors (see below), whose sum is σ = 148765680. Its totient is φ = 17001600.

The previous prime is 55255489. The next prime is 55255517. The reversal of 55255512 is 21555255.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55255512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55255517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88239 + ... + 88862.

Almost surely, 2^55255512 is an apocalyptic number.

55255512 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55255512 is an abundant number, since it is smaller than the sum of its proper divisors (93510168).

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

55255512 is a wasteful number, since it uses less digits than its factorization.

55255512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177123 (or 177119 counting only the distinct ones).

The product of its digits is 12500, while the sum is 30.

The square root of 55255512 is about 7433.4051416561. The cubic root of 55255512 is about 380.8832455473.

The spelling of 55255512 in words is "fifty-five million, two hundred fifty-five thousand, five hundred twelve".