51952420 has 48 divisors (see below), whose sum is σ = 118173888. Its totient is φ = 19071360.

The previous prime is 51952379. The next prime is 51952447. The reversal of 51952420 is 2425915.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54387 + ... + 55333.

It is an arithmetic number, because the mean of its divisors is an integer number (2461956).

Almost surely, 2^51952420 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 51952420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59086944).

51952420 is an abundant number, since it is smaller than the sum of its proper divisors (66221468).

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

51952420 is a wasteful number, since it uses less digits than its factorization.

51952420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51952420 is about 7207.8027165011. The cubic root of 51952420 is about 373.1372393521.

The spelling of 51952420 in words is "fifty-one million, nine hundred fifty-two thousand, four hundred twenty".