51266637 has 6 divisors (see below), whose sum is σ = 74051822. Its totient is φ = 34177752.

The previous prime is 51266627. The next prime is 51266639. The reversal of 51266637 is 73666215.

It can be written as a sum of positive squares in only one way, i.e., 33802596 + 17464041 = 5814^2 + 4179^2 .

It is not a de Polignac number, because 51266637 - 2⁶ = 51266573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51266639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2848138 + ... + 2848155.

Almost surely, 2^51266637 is an apocalyptic number.

It is an amenable number.

51266637 is a deficient number, since it is larger than the sum of its proper divisors (22785185).

51266637 is a wasteful number, since it uses less digits than its factorization.

51266637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5696299 (or 5696296 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 51266637 is about 7160.0724158349. The cubic root of 51266637 is about 371.4881314111.

The spelling of 51266637 in words is "fifty-one million, two hundred sixty-six thousand, six hundred thirty-seven".