55523512 has 48 divisors (see below), whose sum is σ = 117306000. Its totient is φ = 24604800.

The previous prime is 55523467. The next prime is 55523527. The reversal of 55523512 is 21532555.

It is a congruent number.

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, 38989 + ... + 40387.

It is an arithmetic number, because the mean of its divisors is an integer number (2443875).

Almost surely, 2^55523512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55523512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58653000).

55523512 is an abundant number, since it is smaller than the sum of its proper divisors (61782488).

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

55523512 is a wasteful number, since it uses less digits than its factorization.

55523512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468 (or 1453 counting only the distinct ones).

The product of its digits is 7500, while the sum is 28.

The square root of 55523512 is about 7451.4100678999. The cubic root of 55523512 is about 381.4980386465.

The spelling of 55523512 in words is "fifty-five million, five hundred twenty-three thousand, five hundred twelve".