37361921 has 2 divisors, whose sum is σ = 37361922. Its totient is φ = 37361920.

The previous prime is 37361917. The next prime is 37361941. The reversal of 37361921 is 12916373.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36663025 + 698896 = 6055^2 + 836^2 .

It is an emirp because it is prime and its reverse (12916373) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37361921 - 2² = 37361917 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (37361941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18680960 + 18680961.

It is an arithmetic number, because the mean of its divisors is an integer number (18680961).

Almost surely, 2^37361921 is an apocalyptic number.

It is an amenable number.

37361921 is a deficient number, since it is larger than the sum of its proper divisors (1).

37361921 is an equidigital number, since it uses as much as digits as its factorization.

37361921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 37361921 is about 6112.4398565548. The cubic root of 37361921 is about 334.3051491906.

The spelling of 37361921 in words is "thirty-seven million, three hundred sixty-one thousand, nine hundred twenty-one".