37057921 has 2 divisors, whose sum is σ = 37057922. Its totient is φ = 37057920.

The previous prime is 37057919. The next prime is 37057963. The reversal of 37057921 is 12975073.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18662400 + 18395521 = 4320^2 + 4289^2 .

It is an emirp because it is prime and its reverse (12975073) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37057921 - 2¹ = 37057919 is a prime.

Together with 37057919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (37057981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18528960 + 18528961.

It is an arithmetic number, because the mean of its divisors is an integer number (18528961).

Almost surely, 2^37057921 is an apocalyptic number.

It is an amenable number.

37057921 is a deficient number, since it is larger than the sum of its proper divisors (1).

37057921 is an equidigital number, since it uses as much as digits as its factorization.

37057921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 37057921 is about 6087.5217453410. The cubic root of 37057921 is about 333.3959734501.

The spelling of 37057921 in words is "thirty-seven million, fifty-seven thousand, nine hundred twenty-one".