51249024 has 80 divisors (see below), whose sum is σ = 152547120. Its totient is φ = 17079552.

The previous prime is 51249019. The next prime is 51249031. The reversal of 51249024 is 42094215.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7897 + ... + 12839.

It is an arithmetic number, because the mean of its divisors is an integer number (1906839).

Almost surely, 2^51249024 is an apocalyptic number.

51249024 is a gapful number since it is divisible by the number (54) 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 51249024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76273560).

51249024 is an abundant number, since it is smaller than the sum of its proper divisors (101298096).

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

51249024 is an equidigital number, since it uses as much as digits as its factorization.

51249024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4969 (or 4948 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 51249024 is about 7158.8423645168. The cubic root of 51249024 is about 371.4455841179.

The spelling of 51249024 in words is "fifty-one million, two hundred forty-nine thousand, twenty-four".