85372057 has 4 divisors (see below), whose sum is σ = 86400720. Its totient is φ = 84343396.

The previous prime is 85372043. The next prime is 85372087. The reversal of 85372057 is 75027358.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85372057 - 2¹¹ = 85370009 is a prime.

It is a super-2 number, since 2×85372057² = 14576776232822498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85372087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514207 + ... + 514372.

It is an arithmetic number, because the mean of its divisors is an integer number (21600180).

Almost surely, 2^85372057 is an apocalyptic number.

It is an amenable number.

85372057 is a deficient number, since it is larger than the sum of its proper divisors (1028663).

85372057 is a wasteful number, since it uses less digits than its factorization.

85372057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028662.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 85372057 is about 9239.7000492440. The cubic root of 85372057 is about 440.3235516203.

The spelling of 85372057 in words is "eighty-five million, three hundred seventy-two thousand, fifty-seven".