52551637 has 2 divisors, whose sum is σ = 52551638. Its totient is φ = 52551636.

The previous prime is 52551623. The next prime is 52551643. The reversal of 52551637 is 73615525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46977316 + 5574321 = 6854^2 + 2361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52551637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52551337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26275818 + 26275819.

It is an arithmetic number, because the mean of its divisors is an integer number (26275819).

Almost surely, 2^52551637 is an apocalyptic number.

It is an amenable number.

52551637 is a deficient number, since it is larger than the sum of its proper divisors (1).

52551637 is an equidigital number, since it uses as much as digits as its factorization.

52551637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31500, while the sum is 34.

The square root of 52551637 is about 7249.2507888747. The cubic root of 52551637 is about 374.5663419611.

The spelling of 52551637 in words is "fifty-two million, five hundred fifty-one thousand, six hundred thirty-seven".