51102136 has 72 divisors (see below), whose sum is σ = 109746360. Its totient is φ = 22260480.

The previous prime is 51102131. The next prime is 51102151. The reversal of 51102136 is 63120115.

It is a super-2 number, since 2×51102136² = 5222856607524992, which contains 22 as substring.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51102131) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1648441 + ... + 1648471.

It is an arithmetic number, because the mean of its divisors is an integer number (1524255).

Almost surely, 2^51102136 is an apocalyptic number.

It is an amenable number.

51102136 is an abundant number, since it is smaller than the sum of its proper divisors (58644224).

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

51102136 is a wasteful number, since it uses less digits than its factorization.

51102136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 51102136 is about 7148.5758022140. The cubic root of 51102136 is about 371.0903701408.

The spelling of 51102136 in words is "fifty-one million, one hundred two thousand, one hundred thirty-six".