85296251 has 4 divisors (see below), whose sum is σ = 85315104. Its totient is φ = 85277400.

The previous prime is 85296223. The next prime is 85296319. The reversal of 85296251 is 15269258.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15269258 = 2 ⋅7634629.

It is a cyclic number.

It is not a de Polignac number, because 85296251 - 2¹⁴ = 85279867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85236251) 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, 1886 + ... + 13196.

It is an arithmetic number, because the mean of its divisors is an integer number (21328776).

Almost surely, 2^85296251 is an apocalyptic number.

85296251 is the 7541-st pentagonal number.

85296251 is a deficient number, since it is larger than the sum of its proper divisors (18853).

85296251 is a wasteful number, since it uses less digits than its factorization.

85296251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18852.

The product of its digits is 43200, while the sum is 38.

The square root of 85296251 is about 9235.5969487630. The cubic root of 85296251 is about 440.1931847967.

The spelling of 85296251 in words is "eighty-five million, two hundred ninety-six thousand, two hundred fifty-one".