51390952 has 16 divisors (see below), whose sum is σ = 96566400. Its totient is φ = 25639920.

The previous prime is 51390883. The next prime is 51390959. The reversal of 51390952 is 25909315.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51390959) 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, 2874 + ... + 10537.

It is an arithmetic number, because the mean of its divisors is an integer number (6035400).

Almost surely, 2^51390952 is an apocalyptic number.

It is an amenable number.

51390952 is a deficient number, since it is larger than the sum of its proper divisors (45175448).

51390952 is a wasteful number, since it uses less digits than its factorization.

51390952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13896 (or 13892 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 51390952 is about 7168.7482868350. The cubic root of 51390952 is about 371.7881593425.

The spelling of 51390952 in words is "fifty-one million, three hundred ninety thousand, nine hundred fifty-two".