55102512 has 20 divisors (see below), whose sum is σ = 142348280. Its totient is φ = 18367488.

The previous prime is 55102511. The next prime is 55102543. The reversal of 55102512 is 21520155.

It is not an unprimeable number, because it can be changed into a prime (55102511) 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, 573937 + ... + 574032.

It is an arithmetic number, because the mean of its divisors is an integer number (7117414).

Almost surely, 2^55102512 is an apocalyptic number.

It is an amenable number.

55102512 is an abundant number, since it is smaller than the sum of its proper divisors (87245768).

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

55102512 is a wasteful number, since it uses less digits than its factorization.

55102512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147980 (or 1147974 counting only the distinct ones).

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

The square root of 55102512 is about 7423.1066272821. The cubic root of 55102512 is about 380.5313711103.

Adding to 55102512 its reverse (21520155), we get a palindrome (76622667).

The spelling of 55102512 in words is "fifty-five million, one hundred two thousand, five hundred twelve".