37491061 has 2 divisors, whose sum is σ = 37491062. Its totient is φ = 37491060.

The previous prime is 37491043. The next prime is 37491067. The reversal of 37491061 is 16019473.

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., 25310961 + 12180100 = 5031^2 + 3490^2 .

It is an emirp because it is prime and its reverse (16019473) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37491061 - 2⁹ = 37490549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37491067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18745530 + 18745531.

It is an arithmetic number, because the mean of its divisors is an integer number (18745531).

Almost surely, 2^37491061 is an apocalyptic number.

It is an amenable number.

37491061 is a deficient number, since it is larger than the sum of its proper divisors (1).

37491061 is an equidigital number, since it uses as much as digits as its factorization.

37491061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 37491061 is about 6122.9944471639. The cubic root of 37491061 is about 334.6898771003.

The spelling of 37491061 in words is "thirty-seven million, four hundred ninety-one thousand, sixty-one".