85722951 has 16 divisors (see below), whose sum is σ = 118570496. Its totient is φ = 55048896.

The previous prime is 85722947. The next prime is 85722953. The reversal of 85722951 is 15922758.

It is not a de Polignac number, because 85722951 - 2² = 85722947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85722953) 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, 4866 + ... + 13968.

It is an arithmetic number, because the mean of its divisors is an integer number (7410656).

Almost surely, 2^85722951 is an apocalyptic number.

85722951 is a deficient number, since it is larger than the sum of its proper divisors (32847545).

85722951 is a wasteful number, since it uses less digits than its factorization.

85722951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9222.

The product of its digits is 50400, while the sum is 39.

The square root of 85722951 is about 9258.6689648135. The cubic root of 85722951 is about 440.9259957782.

The spelling of 85722951 in words is "eighty-five million, seven hundred twenty-two thousand, nine hundred fifty-one".