37522561 has 2 divisors, whose sum is σ = 37522562. Its totient is φ = 37522560.

The previous prime is 37522483. The next prime is 37522571. The reversal of 37522561 is 16522573.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32433025 + 5089536 = 5695^2 + 2256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37522561 is a prime.

It is not a weakly prime, because it can be changed into another prime (37522571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18761280 + 18761281.

It is an arithmetic number, because the mean of its divisors is an integer number (18761281).

Almost surely, 2^37522561 is an apocalyptic number.

It is an amenable number.

37522561 is a deficient number, since it is larger than the sum of its proper divisors (1).

37522561 is an equidigital number, since it uses as much as digits as its factorization.

37522561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 31.

The square root of 37522561 is about 6125.5661779137. The cubic root of 37522561 is about 334.7835863699.

It can be divided in two parts, 37522 and 561, that added together give a palindrome (38083).

The spelling of 37522561 in words is "thirty-seven million, five hundred twenty-two thousand, five hundred sixty-one".