87225761 has 16 divisors (see below), whose sum is σ = 102807936. Its totient is φ = 72441216.

The previous prime is 87225709. The next prime is 87225767. The reversal of 87225761 is 16752278.

It is a cyclic number.

It is not a de Polignac number, because 87225761 - 2¹⁰ = 87224737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87225767) 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, 78965 + ... + 80061.

It is an arithmetic number, because the mean of its divisors is an integer number (6425496).

Almost surely, 2^87225761 is an apocalyptic number.

It is an amenable number.

87225761 is a deficient number, since it is larger than the sum of its proper divisors (15582175).

87225761 is a wasteful number, since it uses less digits than its factorization.

87225761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448.

The product of its digits is 47040, while the sum is 38.

The square root of 87225761 is about 9339.4732720855. The cubic root of 87225761 is about 443.4877099446.

The spelling of 87225761 in words is "eighty-seven million, two hundred twenty-five thousand, seven hundred sixty-one".