85372251 has 8 divisors (see below), whose sum is σ = 118778880. Its totient is φ = 54440232.

The previous prime is 85372247. The next prime is 85372253. The reversal of 85372251 is 15227358.

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

It is not a de Polignac number, because 85372251 - 2² = 85372247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85372253) 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, 618571 + ... + 618708.

It is an arithmetic number, because the mean of its divisors is an integer number (14847360).

Almost surely, 2^85372251 is an apocalyptic number.

85372251 is a deficient number, since it is larger than the sum of its proper divisors (33406629).

85372251 is a wasteful number, since it uses less digits than its factorization.

85372251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237305.

The product of its digits is 16800, while the sum is 33.

The square root of 85372251 is about 9239.7105474144. The cubic root of 85372251 is about 440.3238851514.

The spelling of 85372251 in words is "eighty-five million, three hundred seventy-two thousand, two hundred fifty-one".