51492744 has 48 divisors (see below), whose sum is σ = 140715900. Its totient is φ = 17009664.

The previous prime is 51492739. The next prime is 51492757. The reversal of 51492744 is 44729415.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 49702500 + 1790244 = 7050^2 + 1338^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 51492699 and 51492708.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4972 + ... + 11300.

Almost surely, 2^51492744 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 51492744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70357950).

51492744 is an abundant number, since it is smaller than the sum of its proper divisors (89223156).

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

51492744 is a wasteful number, since it uses less digits than its factorization.

51492744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6454 (or 6447 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 51492744 is about 7175.8444799201. The cubic root of 51492744 is about 372.0334690664.

The spelling of 51492744 in words is "fifty-one million, four hundred ninety-two thousand, seven hundred forty-four".