37273921 has 2 divisors, whose sum is σ = 37273922. Its totient is φ = 37273920.

The previous prime is 37273871. The next prime is 37273963. The reversal of 37273921 is 12937273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31798321 + 5475600 = 5639^2 + 2340^2 .

It is an emirp because it is prime and its reverse (12937273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37273921 - 2¹³ = 37265729 is a prime.

It is not a weakly prime, because it can be changed into another prime (37273981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18636960 + 18636961.

It is an arithmetic number, because the mean of its divisors is an integer number (18636961).

Almost surely, 2^37273921 is an apocalyptic number.

It is an amenable number.

37273921 is a deficient number, since it is larger than the sum of its proper divisors (1).

37273921 is an equidigital number, since it uses as much as digits as its factorization.

37273921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 34.

The square root of 37273921 is about 6105.2371780300. The cubic root of 37273921 is about 334.0424755045.

The spelling of 37273921 in words is "thirty-seven million, two hundred seventy-three thousand, nine hundred twenty-one".