85457506 has 4 divisors (see below), whose sum is σ = 128186262. Its totient is φ = 42728752.

The previous prime is 85457447. The next prime is 85457507. The reversal of 85457506 is 60575458.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 62331025 + 23126481 = 7895^2 + 4809^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (85457507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21364375 + ... + 21364378.

Almost surely, 2^85457506 is an apocalyptic number.

85457506 is a deficient number, since it is larger than the sum of its proper divisors (42728756).

85457506 is a wasteful number, since it uses less digits than its factorization.

85457506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42728755.

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 85457506 is about 9244.3229065194. The cubic root of 85457506 is about 440.4704094347.

The spelling of 85457506 in words is "eighty-five million, four hundred fifty-seven thousand, five hundred six".