9087561 has 12 divisors (see below), whose sum is σ = 15001792. Its totient is φ = 5192856.

The previous prime is 9087541. The next prime is 9087563. The reversal of 9087561 is 1657809.

9087561 is a `hidden beast` number, since 90 + 8 + 7 + 561 = 666.

It is not a de Polignac number, because 9087561 - 2⁹ = 9087049 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 (9087563) 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, 72061 + ... + 72186.

Almost surely, 2^9087561 is an apocalyptic number.

It is an amenable number.

9087561 is a deficient number, since it is larger than the sum of its proper divisors (5914231).

9087561 is a wasteful number, since it uses less digits than its factorization.

9087561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144260 (or 144257 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 9087561 is about 3014.5581765824. The cubic root of 9087561 is about 208.6807776027.

The spelling of 9087561 in words is "nine million, eighty-seven thousand, five hundred sixty-one".