9061561 has 4 divisors (see below), whose sum is σ = 9594612. Its totient is φ = 8528512.

The previous prime is 9061531. The next prime is 9061571. The reversal of 9061561 is 1651609.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3083536 + 5978025 = 1756^2 + 2445^2 .

It is a cyclic number.

It is not a de Polignac number, because 9061561 - 2²³ = 672953 is a prime.

It is a super-2 number, since 2×9061561² = 164223775513442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9061531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266500 + ... + 266533.

It is an arithmetic number, because the mean of its divisors is an integer number (2398653).

Almost surely, 2^9061561 is an apocalyptic number.

It is an amenable number.

9061561 is a deficient number, since it is larger than the sum of its proper divisors (533051).

9061561 is a wasteful number, since it uses less digits than its factorization.

9061561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533050.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 9061561 is about 3010.2426812468. The cubic root of 9061561 is about 208.4815718655.

The spelling of 9061561 in words is "nine million, sixty-one thousand, five hundred sixty-one".