51732480 has 112 divisors (see below), whose sum is σ = 165927024. Its totient is φ = 13762560.

The previous prime is 51732463. The next prime is 51732493. The reversal of 51732480 is 8423715.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122670 + ... + 123090.

Almost surely, 2^51732480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51732480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82963512).

51732480 is an abundant number, since it is smaller than the sum of its proper divisors (114194544).

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

51732480 is an equidigital number, since it uses as much as digits as its factorization.

51732480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 51732480 is about 7192.5294577082. The cubic root of 51732480 is about 372.6099370716.

The spelling of 51732480 in words is "fifty-one million, seven hundred thirty-two thousand, four hundred eighty".