51453680 has 40 divisors (see below), whose sum is σ = 122870112. Its totient is φ = 20024064.

The previous prime is 51453667. The next prime is 51453697. The reversal of 51453680 is 8635415.

It is a happy number.

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

It is a congruent number.

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, 5732 + ... + 11651.

Almost surely, 2^51453680 is an apocalyptic number.

It is an amenable number.

51453680 is an abundant number, since it is smaller than the sum of its proper divisors (71416432).

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

51453680 is a wasteful number, since it uses less digits than its factorization.

51453680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17433 (or 17427 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 51453680 is about 7173.1220538898. The cubic root of 51453680 is about 371.9393665389.

The spelling of 51453680 in words is "fifty-one million, four hundred fifty-three thousand, six hundred eighty".