37012021 has 2 divisors, whose sum is σ = 37012022. Its totient is φ = 37012020.

The previous prime is 37011977. The next prime is 37012039. The reversal of 37012021 is 12021073.

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., 29311396 + 7700625 = 5414^2 + 2775^2 .

It is a cyclic number.

It is not a de Polignac number, because 37012021 - 2⁷ = 37011893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 37011986 and 37012004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37012051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18506010 + 18506011.

It is an arithmetic number, because the mean of its divisors is an integer number (18506011).

Almost surely, 2^37012021 is an apocalyptic number.

It is an amenable number.

37012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

37012021 is an equidigital number, since it uses as much as digits as its factorization.

37012021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 37012021 is about 6083.7505701664. The cubic root of 37012021 is about 333.2582683192.

Adding to 37012021 its reverse (12021073), we get a palindrome (49033094).

The spelling of 37012021 in words is "thirty-seven million, twelve thousand, twenty-one".