37566161 has 2 divisors, whose sum is σ = 37566162. Its totient is φ = 37566160.

The previous prime is 37566103. The next prime is 37566167. The reversal of 37566161 is 16166573.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35331136 + 2235025 = 5944^2 + 1495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37566161 is a prime.

It is a super-2 number, since 2×37566161² = 2822432904555842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (37566167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18783080 + 18783081.

It is an arithmetic number, because the mean of its divisors is an integer number (18783081).

Almost surely, 2^37566161 is an apocalyptic number.

It is an amenable number.

37566161 is a deficient number, since it is larger than the sum of its proper divisors (1).

37566161 is an equidigital number, since it uses as much as digits as its factorization.

37566161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 37566161 is about 6129.1239993983. The cubic root of 37566161 is about 334.9132054049.

The spelling of 37566161 in words is "thirty-seven million, five hundred sixty-six thousand, one hundred sixty-one".