51637601 has 2 divisors, whose sum is σ = 51637602. Its totient is φ = 51637600.

The previous prime is 51637583. The next prime is 51637627. The reversal of 51637601 is 10673615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47541025 + 4096576 = 6895^2 + 2024^2 .

It is a cyclic number.

It is not a de Polignac number, because 51637601 - 2¹⁴ = 51621217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51637301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25818800 + 25818801.

It is an arithmetic number, because the mean of its divisors is an integer number (25818801).

Almost surely, 2^51637601 is an apocalyptic number.

It is an amenable number.

51637601 is a deficient number, since it is larger than the sum of its proper divisors (1).

51637601 is an equidigital number, since it uses as much as digits as its factorization.

51637601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 51637601 is about 7185.9307678268. The cubic root of 51637601 is about 372.3820048775.

The spelling of 51637601 in words is "fifty-one million, six hundred thirty-seven thousand, six hundred one".