85783251 has 16 divisors (see below), whose sum is σ = 115665920. Its totient is φ = 56548800.

The previous prime is 85783213. The next prime is 85783277. The reversal of 85783251 is 15238758.

It is not a de Polignac number, because 85783251 - 2¹³ = 85775059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85783051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185046 + ... + 185508.

It is an arithmetic number, because the mean of its divisors is an integer number (7229120).

Almost surely, 2^85783251 is an apocalyptic number.

85783251 is a deficient number, since it is larger than the sum of its proper divisors (29882669).

85783251 is a wasteful number, since it uses less digits than its factorization.

85783251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

The product of its digits is 67200, while the sum is 39.

The square root of 85783251 is about 9261.9247999538. The cubic root of 85783251 is about 441.0293582401.

The spelling of 85783251 in words is "eighty-five million, seven hundred eighty-three thousand, two hundred fifty-one".