51520396 has 6 divisors (see below), whose sum is σ = 90160700. Its totient is φ = 25760196.

The previous prime is 51520379. The next prime is 51520411. The reversal of 51520396 is 69302515.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6440046 + ... + 6440053.

Almost surely, 2^51520396 is an apocalyptic number.

It is an amenable number.

51520396 is a deficient number, since it is larger than the sum of its proper divisors (38640304).

51520396 is a wasteful number, since it uses less digits than its factorization.

51520396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12880103 (or 12880101 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 51520396 is about 7177.7709631891. The cubic root of 51520396 is about 372.1000520951.

The spelling of 51520396 in words is "fifty-one million, five hundred twenty thousand, three hundred ninety-six".