85755457 has 2 divisors, whose sum is σ = 85755458. Its totient is φ = 85755456.

The previous prime is 85755443. The next prime is 85755491. The reversal of 85755457 is 75455758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82519056 + 3236401 = 9084^2 + 1799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85755457 is a prime.

It is not a weakly prime, because it can be changed into another prime (85755437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42877728 + 42877729.

It is an arithmetic number, because the mean of its divisors is an integer number (42877729).

Almost surely, 2^85755457 is an apocalyptic number.

It is an amenable number.

85755457 is a deficient number, since it is larger than the sum of its proper divisors (1).

85755457 is an equidigital number, since it uses as much as digits as its factorization.

85755457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 980000, while the sum is 46.

The square root of 85755457 is about 9260.4242343426. The cubic root of 85755457 is about 440.9817215358.

The spelling of 85755457 in words is "eighty-five million, seven hundred fifty-five thousand, four hundred fifty-seven".