51257264 has 10 divisors (see below), whose sum is σ = 99310980. Its totient is φ = 25628624.

The previous prime is 51257249. The next prime is 51257279. The reversal of 51257264 is 46275215.

51257264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51257249) and next prime (51257279).

It is a super-2 number, since 2×51257264² = 5254614225531392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51257264.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1601774 + ... + 1601805.

It is an arithmetic number, because the mean of its divisors is an integer number (9931098).

Almost surely, 2^51257264 is an apocalyptic number.

It is an amenable number.

51257264 is a deficient number, since it is larger than the sum of its proper divisors (48053716).

51257264 is a wasteful number, since it uses less digits than its factorization.

51257264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203587 (or 3203581 counting only the distinct ones).

The product of its digits is 16800, while the sum is 32.

The square root of 51257264 is about 7159.4178534291. The cubic root of 51257264 is about 371.4654904976.

The spelling of 51257264 in words is "fifty-one million, two hundred fifty-seven thousand, two hundred sixty-four".