51673520 has 40 divisors (see below), whose sum is σ = 120517584. Its totient is φ = 20604672.

The previous prime is 51673507. The next prime is 51673553. The reversal of 51673520 is 2537615.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30947 + ... + 32573.

Almost surely, 2^51673520 is an apocalyptic number.

It is an amenable number.

51673520 is an abundant number, since it is smaller than the sum of its proper divisors (68844064).

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

51673520 is a wasteful number, since it uses less digits than its factorization.

51673520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037 (or 2031 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 51673520 is about 7188.4295920597. The cubic root of 51673520 is about 372.4683275625.

The spelling of 51673520 in words is "fifty-one million, six hundred seventy-three thousand, five hundred twenty".