37057981 has 2 divisors, whose sum is σ = 37057982. Its totient is φ = 37057980.

The previous prime is 37057963. The next prime is 37057987. The reversal of 37057981 is 18975073.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26101881 + 10956100 = 5109^2 + 3310^2 .

It is a cyclic number.

It is not a de Polignac number, because 37057981 - 2¹⁵ = 37025213 is a prime.

It is a super-2 number, since 2×37057981² = 2746587911592722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37057987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18528990 + 18528991.

It is an arithmetic number, because the mean of its divisors is an integer number (18528991).

Almost surely, 2^37057981 is an apocalyptic number.

It is an amenable number.

37057981 is a deficient number, since it is larger than the sum of its proper divisors (1).

37057981 is an equidigital number, since it uses as much as digits as its factorization.

37057981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 37057981 is about 6087.5266734529. The cubic root of 37057981 is about 333.3961533824.

The spelling of 37057981 in words is "thirty-seven million, fifty-seven thousand, nine hundred eighty-one".