85072457 has 8 divisors (see below), whose sum is σ = 88429440. Its totient is φ = 81743760.

The previous prime is 85072451. The next prime is 85072459. The reversal of 85072457 is 75427058.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85072457 - 2²⁶ = 17963593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85072457.

It is not an unprimeable number, because it can be changed into a prime (85072451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833 + ... + 13070.

It is an arithmetic number, because the mean of its divisors is an integer number (11053680).

Almost surely, 2^85072457 is an apocalyptic number.

It is an amenable number.

85072457 is a deficient number, since it is larger than the sum of its proper divisors (3356983).

85072457 is a wasteful number, since it uses less digits than its factorization.

85072457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14143.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 85072457 is about 9223.4731527771. The cubic root of 85072457 is about 439.8078654931.

The spelling of 85072457 in words is "eighty-five million, seventy-two thousand, four hundred fifty-seven".