51249576 has 64 divisors (see below), whose sum is σ = 147847680. Its totient is φ = 14500800.

The previous prime is 51249571. The next prime is 51249581. The reversal of 51249576 is 67594215.

It is an interprime number because it is at equal distance from previous prime (51249571) and next prime (51249581).

It is not an unprimeable number, because it can be changed into a prime (51249571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16551 + ... + 19401.

It is an arithmetic number, because the mean of its divisors is an integer number (2310120).

Almost surely, 2^51249576 is an apocalyptic number.

51249576 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51249576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73923840).

51249576 is an abundant number, since it is smaller than the sum of its proper divisors (96598104).

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

51249576 is a wasteful number, since it uses less digits than its factorization.

51249576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974 (or 2970 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 51249576 is about 7158.8809181324. The cubic root of 51249576 is about 371.4469177188.

The spelling of 51249576 in words is "fifty-one million, two hundred forty-nine thousand, five hundred seventy-six".