89145261 has 12 divisors (see below), whose sum is σ = 128950588. Its totient is φ = 59344704.

The previous prime is 89145233. The next prime is 89145269. The reversal of 89145261 is 16254198.

It can be written as a sum of positive squares in 2 ways, for example, as 72080100 + 17065161 = 8490^2 + 4131^2 .

It is not a de Polignac number, because 89145261 - 2⁶ = 89145197 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 (89145269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160 + ... + 13353.

Almost surely, 2^89145261 is an apocalyptic number.

It is an amenable number.

89145261 is a deficient number, since it is larger than the sum of its proper divisors (39805327).

89145261 is a wasteful number, since it uses less digits than its factorization.

89145261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14252 (or 14249 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 89145261 is about 9441.6768108213. The cubic root of 89145261 is about 446.7172813983.

The spelling of 89145261 in words is "eighty-nine million, one hundred forty-five thousand, two hundred sixty-one".