51490952 has 36 divisors (see below), whose sum is σ = 100546695. Its totient is φ = 24720528.

The previous prime is 51490937. The next prime is 51490987. The reversal of 51490952 is 25909415.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 25745476 + 25745476 = 5074^2 + 5074^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5074.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 872699 + ... + 872757.

Almost surely, 2^51490952 is an apocalyptic number.

It is an amenable number.

51490952 is a deficient number, since it is larger than the sum of its proper divisors (49055743).

51490952 is an equidigital number, since it uses as much as digits as its factorization.

51490952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 51490952 is about 7175.7196154811. The cubic root of 51490952 is about 372.0291533016.

Multiplying 51490952 by its product of nonzero digits (16200), we get a square (834153422400 = 913320²).

The spelling of 51490952 in words is "fifty-one million, four hundred ninety thousand, nine hundred fifty-two".