51244724 has 12 divisors (see below), whose sum is σ = 89728548. Its totient is φ = 25608000.

The previous prime is 51244703. The next prime is 51244757. The reversal of 51244724 is 42744215.

It can be written as a sum of positive squares in 2 ways, for example, as 20994724 + 30250000 = 4582^2 + 5500^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11264 + ... + 15144.

It is an arithmetic number, because the mean of its divisors is an integer number (7477379).

Almost surely, 2^51244724 is an apocalyptic number.

It is an amenable number.

51244724 is a deficient number, since it is larger than the sum of its proper divisors (38483824).

51244724 is a wasteful number, since it uses less digits than its factorization.

51244724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7186 (or 7184 counting only the distinct ones).

The product of its digits is 8960, while the sum is 29.

The square root of 51244724 is about 7158.5420303299. The cubic root of 51244724 is about 371.4351952327.

Adding to 51244724 its reverse (42744215), we get a palindrome (93988939).

The spelling of 51244724 in words is "fifty-one million, two hundred forty-four thousand, seven hundred twenty-four".