51484520 has 32 divisors (see below), whose sum is σ = 118669320. Its totient is φ = 20090880.

The previous prime is 51484519. The next prime is 51484523. The reversal of 51484520 is 2548415.

51484520 = T₂₀ + T₂₁ + ... + T₆₇₅.

It can be written as a sum of positive squares in 4 ways, for example, as 43744996 + 7739524 = 6614^2 + 2782^2 .

It is not an unprimeable number, because it can be changed into a prime (51484523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14057 + ... + 17336.

Almost surely, 2^51484520 is an apocalyptic number.

It is an amenable number.

51484520 is an abundant number, since it is smaller than the sum of its proper divisors (67184800).

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

51484520 is a wasteful number, since it uses less digits than its factorization.

51484520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31445 (or 31441 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 51484520 is about 7175.2714234376. The cubic root of 51484520 is about 372.0136619640.

The spelling of 51484520 in words is "fifty-one million, four hundred eighty-four thousand, five hundred twenty".