37535021 has 2 divisors, whose sum is σ = 37535022. Its totient is φ = 37535020.

The previous prime is 37534969. The next prime is 37535039. The reversal of 37535021 is 12053573.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19802500 + 17732521 = 4450^2 + 4211^2 .

It is a cyclic number.

It is not a de Polignac number, because 37535021 - 2¹⁰ = 37533997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37535041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18767510 + 18767511.

It is an arithmetic number, because the mean of its divisors is an integer number (18767511).

Almost surely, 2^37535021 is an apocalyptic number.

It is an amenable number.

37535021 is a deficient number, since it is larger than the sum of its proper divisors (1).

37535021 is an equidigital number, since it uses as much as digits as its factorization.

37535021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 37535021 is about 6126.5831423396. The cubic root of 37535021 is about 334.8206391166.

Adding to 37535021 its reverse (12053573), we get a palindrome (49588594).

The spelling of 37535021 in words is "thirty-seven million, five hundred thirty-five thousand, twenty-one".