85253491 has 2 divisors, whose sum is σ = 85253492. Its totient is φ = 85253490.

The previous prime is 85253471. The next prime is 85253501. The reversal of 85253491 is 19435258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85253491 - 2⁵ = 85253459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85253491.

It is not a weakly prime, because it can be changed into another prime (85253471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42626745 + 42626746.

It is an arithmetic number, because the mean of its divisors is an integer number (42626746).

Almost surely, 2^85253491 is an apocalyptic number.

85253491 is a deficient number, since it is larger than the sum of its proper divisors (1).

85253491 is an equidigital number, since it uses as much as digits as its factorization.

85253491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 37.

The square root of 85253491 is about 9233.2817026234. The cubic root of 85253491 is about 440.1196145183.

The spelling of 85253491 in words is "eighty-five million, two hundred fifty-three thousand, four hundred ninety-one".