37540213 has 2 divisors, whose sum is σ = 37540214. Its totient is φ = 37540212.

The previous prime is 37540189. The next prime is 37540229. The reversal of 37540213 is 31204573.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37234404 + 305809 = 6102^2 + 553^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37540213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37540813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18770106 + 18770107.

It is an arithmetic number, because the mean of its divisors is an integer number (18770107).

Almost surely, 2^37540213 is an apocalyptic number.

It is an amenable number.

37540213 is a deficient number, since it is larger than the sum of its proper divisors (1).

37540213 is an equidigital number, since it uses as much as digits as its factorization.

37540213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 37540213 is about 6127.0068549007. The cubic root of 37540213 is about 334.8360763320.

Adding to 37540213 its reverse (31204573), we get a palindrome (68744786).

The spelling of 37540213 in words is "thirty-seven million, five hundred forty thousand, two hundred thirteen".