51452520 has 64 divisors (see below), whose sum is σ = 176411520. Its totient is φ = 11760384.

The previous prime is 51452503. The next prime is 51452537. The reversal of 51452520 is 2525415.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51452503) and next prime (51452537).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29787 + ... + 31466.

It is an arithmetic number, because the mean of its divisors is an integer number (2756430).

Almost surely, 2^51452520 is an apocalyptic number.

It is an amenable number.

51452520 is an abundant number, since it is smaller than the sum of its proper divisors (124959000).

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

51452520 is a wasteful number, since it uses less digits than its factorization.

51452520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61274 (or 61270 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 51452520 is about 7173.0411960339. The cubic root of 51452520 is about 371.9365714495.

Adding to 51452520 its reverse (2525415), we get a palindrome (53977935).

The spelling of 51452520 in words is "fifty-one million, four hundred fifty-two thousand, five hundred twenty".