51872996 has 48 divisors (see below), whose sum is σ = 108205440. Its totient is φ = 21288960.

The previous prime is 51872969. The next prime is 51872999. The reversal of 51872996 is 69927815.

It is a self number, because there is not a number n which added to its sum of digits gives 51872996.

It is not an unprimeable number, because it can be changed into a prime (51872999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156551 + ... + 156881.

It is an arithmetic number, because the mean of its divisors is an integer number (2254280).

Almost surely, 2^51872996 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 51872996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54102720).

51872996 is an abundant number, since it is smaller than the sum of its proper divisors (56332444).

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

51872996 is a wasteful number, since it uses less digits than its factorization.

51872996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 562 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The square root of 51872996 is about 7202.2910243894. The cubic root of 51872996 is about 372.9469936920.

The spelling of 51872996 in words is "fifty-one million, eight hundred seventy-two thousand, nine hundred ninety-six".