61075057 has 2 divisors, whose sum is σ = 61075058. Its totient is φ = 61075056.

The previous prime is 61075037. The next prime is 61075061. The reversal of 61075057 is 75057016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54110736 + 6964321 = 7356^2 + 2639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61075057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61075037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30537528 + 30537529.

It is an arithmetic number, because the mean of its divisors is an integer number (30537529).

Almost surely, 2^61075057 is an apocalyptic number.

It is an amenable number.

61075057 is a deficient number, since it is larger than the sum of its proper divisors (1).

61075057 is an equidigital number, since it uses as much as digits as its factorization.

61075057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 61075057 is about 7815.0532307848. The cubic root of 61075057 is about 393.8111065993.

The spelling of 61075057 in words is "sixty-one million, seventy-five thousand, fifty-seven".