89722251 has 12 divisors (see below), whose sum is σ = 129682800. Its totient is φ = 59776080.

The previous prime is 89722247. The next prime is 89722261. The reversal of 89722251 is 15222798.

It is not a de Polignac number, because 89722251 - 2² = 89722247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89722231) 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 11 ways as a sum of consecutive naturals, for example, 20986 + ... + 24896.

It is an arithmetic number, because the mean of its divisors is an integer number (10806900).

Almost surely, 2^89722251 is an apocalyptic number.

89722251 is a deficient number, since it is larger than the sum of its proper divisors (39960549).

89722251 is a wasteful number, since it uses less digits than its factorization.

89722251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6466 (or 6463 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 89722251 is about 9472.1830113232. The cubic root of 89722251 is about 447.6789975018.

The spelling of 89722251 in words is "eighty-nine million, seven hundred twenty-two thousand, two hundred fifty-one".