85913057 has 2 divisors, whose sum is σ = 85913058. Its totient is φ = 85913056.

The previous prime is 85912987. The next prime is 85913077. The reversal of 85913057 is 75031958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49056016 + 36857041 = 7004^2 + 6071^2 .

It is a cyclic number.

It is not a de Polignac number, because 85913057 - 2¹² = 85908961 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85913057.

It is not a weakly prime, because it can be changed into another prime (85913077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42956528 + 42956529.

It is an arithmetic number, because the mean of its divisors is an integer number (42956529).

Almost surely, 2^85913057 is an apocalyptic number.

It is an amenable number.

85913057 is a deficient number, since it is larger than the sum of its proper divisors (1).

85913057 is an equidigital number, since it uses as much as digits as its factorization.

85913057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 85913057 is about 9268.9296577329. The cubic root of 85913057 is about 441.2516992554.

The spelling of 85913057 in words is "eighty-five million, nine hundred thirteen thousand, fifty-seven".