75577013 has 2 divisors, whose sum is σ = 75577014. Its totient is φ = 75577012.

The previous prime is 75576979. The next prime is 75577031. The reversal of 75577013 is 31077557.

Together with next prime (75577031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74770609 + 806404 = 8647^2 + 898^2 .

It is a cyclic number.

It is not a de Polignac number, because 75577013 - 2¹⁶ = 75511477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75577813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37788506 + 37788507.

It is an arithmetic number, because the mean of its divisors is an integer number (37788507).

Almost surely, 2^75577013 is an apocalyptic number.

It is an amenable number.

75577013 is a deficient number, since it is larger than the sum of its proper divisors (1).

75577013 is an equidigital number, since it uses as much as digits as its factorization.

75577013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25725, while the sum is 35.

The square root of 75577013 is about 8693.5040691312. The cubic root of 75577013 is about 422.7950634272.

The spelling of 75577013 in words is "seventy-five million, five hundred seventy-seven thousand, thirteen".