37036561 has 2 divisors, whose sum is σ = 37036562. Its totient is φ = 37036560.

The previous prime is 37036553. The next prime is 37036579. The reversal of 37036561 is 16563073.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20070400 + 16966161 = 4480^2 + 4119^2 .

It is an emirp because it is prime and its reverse (16563073) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37036561 - 2³ = 37036553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (37036861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18518280 + 18518281.

It is an arithmetic number, because the mean of its divisors is an integer number (18518281).

Almost surely, 2^37036561 is an apocalyptic number.

It is an amenable number.

37036561 is a deficient number, since it is larger than the sum of its proper divisors (1).

37036561 is an equidigital number, since it uses as much as digits as its factorization.

37036561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 37036561 is about 6085.7670839427. The cubic root of 37036561 is about 333.3319052161.

The spelling of 37036561 in words is "thirty-seven million, thirty-six thousand, five hundred sixty-one".