61370537 has 2 divisors, whose sum is σ = 61370538. Its totient is φ = 61370536.

The previous prime is 61370497. The next prime is 61370587. The reversal of 61370537 is 73507316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49336576 + 12033961 = 7024^2 + 3469^2 .

It is a cyclic number.

It is not a de Polignac number, because 61370537 - 2⁶ = 61370473 is a prime.

It is a Chen prime.

It is equal to p_3638543 and since 61370537 and 3638543 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (61370587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30685268 + 30685269.

It is an arithmetic number, because the mean of its divisors is an integer number (30685269).

Almost surely, 2^61370537 is an apocalyptic number.

It is an amenable number.

61370537 is a deficient number, since it is larger than the sum of its proper divisors (1).

61370537 is an equidigital number, since it uses as much as digits as its factorization.

61370537 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 32.

The square root of 61370537 is about 7833.9349627119. The cubic root of 61370537 is about 394.4451687938.

The spelling of 61370537 in words is "sixty-one million, three hundred seventy thousand, five hundred thirty-seven".