51457244 has 24 divisors (see below), whose sum is σ = 95491200. Its totient is φ = 24194160.

The previous prime is 51457243. The next prime is 51457247. The reversal of 51457244 is 44275415.

It is a self number, because there is not a number n which added to its sum of digits gives 51457244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51457243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8129 + ... + 12999.

It is an arithmetic number, because the mean of its divisors is an integer number (3978800).

Almost surely, 2^51457244 is an apocalyptic number.

It is an amenable number.

51457244 is a deficient number, since it is larger than the sum of its proper divisors (44033956).

51457244 is a wasteful number, since it uses less digits than its factorization.

51457244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5033 (or 5031 counting only the distinct ones).

The product of its digits is 22400, while the sum is 32.

The square root of 51457244 is about 7173.3704769794. The cubic root of 51457244 is about 371.9479539473.

The spelling of 51457244 in words is "fifty-one million, four hundred fifty-seven thousand, two hundred forty-four".