61165057 has 2 divisors, whose sum is σ = 61165058. Its totient is φ = 61165056.

The previous prime is 61165043. The next prime is 61165067. The reversal of 61165057 is 75056116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53934336 + 7230721 = 7344^2 + 2689^2 .

It is a cyclic number.

It is not a de Polignac number, because 61165057 - 2¹¹ = 61163009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61165007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30582528 + 30582529.

It is an arithmetic number, because the mean of its divisors is an integer number (30582529).

Almost surely, 2^61165057 is an apocalyptic number.

It is an amenable number.

61165057 is a deficient number, since it is larger than the sum of its proper divisors (1).

61165057 is an equidigital number, since it uses as much as digits as its factorization.

61165057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 61165057 is about 7820.8092292294. The cubic root of 61165057 is about 394.0044512368.

The spelling of 61165057 in words is "sixty-one million, one hundred sixty-five thousand, fifty-seven".