51534660 has 24 divisors (see below), whose sum is σ = 144297216. Its totient is φ = 13742560.

The previous prime is 51534643. The next prime is 51534713. The reversal of 51534660 is 6643515.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429396 + ... + 429515.

It is an arithmetic number, because the mean of its divisors is an integer number (6012384).

Almost surely, 2^51534660 is an apocalyptic number.

It is an amenable number.

51534660 is an abundant number, since it is smaller than the sum of its proper divisors (92762556).

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

51534660 is a wasteful number, since it uses less digits than its factorization.

51534660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858923 (or 858921 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 51534660 is about 7178.7645176590. The cubic root of 51534660 is about 372.1343889519.

The spelling of 51534660 in words is "fifty-one million, five hundred thirty-four thousand, six hundred sixty".