51937637 has 6 divisors (see below), whose sum is σ = 53791218. Its totient is φ = 50145872.

The previous prime is 51937631. The next prime is 51937649. The reversal of 51937637 is 73673915.

It can be written as a sum of positive squares in 3 ways, for example, as 2390116 + 49547521 = 1546^2 + 7039^2 .

It is not a de Polignac number, because 51937637 - 2¹⁸ = 51675493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51937594 and 51937603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51937631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30038 + ... + 31719.

It is an arithmetic number, because the mean of its divisors is an integer number (8965203).

Almost surely, 2^51937637 is an apocalyptic number.

It is an amenable number.

51937637 is a deficient number, since it is larger than the sum of its proper divisors (1853581).

51937637 is an equidigital number, since it uses as much as digits as its factorization.

51937637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61815 (or 61786 counting only the distinct ones).

The product of its digits is 119070, while the sum is 41.

The square root of 51937637 is about 7206.7771576482. Note that the first 3 decimals coincide. The cubic root of 51937637 is about 373.1018440738.

The spelling of 51937637 in words is "fifty-one million, nine hundred thirty-seven thousand, six hundred thirty-seven".