85457507 has 2 divisors, whose sum is σ = 85457508. Its totient is φ = 85457506.

The previous prime is 85457447. The next prime is 85457509. The reversal of 85457507 is 70575458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85457507 - 2²⁰ = 84408931 is a prime.

Together with 85457509, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85457509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42728753 + 42728754.

It is an arithmetic number, because the mean of its divisors is an integer number (42728754).

Almost surely, 2^85457507 is an apocalyptic number.

85457507 is a deficient number, since it is larger than the sum of its proper divisors (1).

85457507 is an equidigital number, since it uses as much as digits as its factorization.

85457507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196000, while the sum is 41.

The square root of 85457507 is about 9244.3229606067. The cubic root of 85457507 is about 440.4704111528.

The spelling of 85457507 in words is "eighty-five million, four hundred fifty-seven thousand, five hundred seven".