37220537 has 2 divisors, whose sum is σ = 37220538. Its totient is φ = 37220536.

The previous prime is 37220527. The next prime is 37220567. The reversal of 37220537 is 73502273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35271721 + 1948816 = 5939^2 + 1396^2 .

It is a cyclic number.

It is not a de Polignac number, because 37220537 - 2¹⁸ = 36958393 is a prime.

It is not a weakly prime, because it can be changed into another prime (37220527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18610268 + 18610269.

It is an arithmetic number, because the mean of its divisors is an integer number (18610269).

Almost surely, 2^37220537 is an apocalyptic number.

It is an amenable number.

37220537 is a deficient number, since it is larger than the sum of its proper divisors (1).

37220537 is an equidigital number, since it uses as much as digits as its factorization.

37220537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 37220537 is about 6100.8636273892. The cubic root of 37220537 is about 333.8829265660.

The spelling of 37220537 in words is "thirty-seven million, two hundred twenty thousand, five hundred thirty-seven".