37752661 has 2 divisors, whose sum is σ = 37752662. Its totient is φ = 37752660.

The previous prime is 37752641. The next prime is 37752697. The reversal of 37752661 is 16625773.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37271025 + 481636 = 6105^2 + 694^2 .

It is an emirp because it is prime and its reverse (16625773) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37752661 - 2⁵ = 37752629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 37752661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37752641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18876330 + 18876331.

It is an arithmetic number, because the mean of its divisors is an integer number (18876331).

Almost surely, 2^37752661 is an apocalyptic number.

It is an amenable number.

37752661 is a deficient number, since it is larger than the sum of its proper divisors (1).

37752661 is an equidigital number, since it uses as much as digits as its factorization.

37752661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 37752661 is about 6144.3194090151. The cubic root of 37752661 is about 335.4665245862.

The spelling of 37752661 in words is "thirty-seven million, seven hundred fifty-two thousand, six hundred sixty-one".