7015561 has 8 divisors (see below), whose sum is σ = 8097984. Its totient is φ = 5953200.

The previous prime is 7015559. The next prime is 7015571. The reversal of 7015561 is 1655107.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7015561 - 2¹ = 7015559 is a prime.

It is a super-2 number, since 2×7015561² = 98436192289442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7015501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4255 + ... + 5668.

It is an arithmetic number, because the mean of its divisors is an integer number (1012248).

Almost surely, 2^7015561 is an apocalyptic number.

It is an amenable number.

7015561 is a deficient number, since it is larger than the sum of its proper divisors (1082423).

7015561 is a wasteful number, since it uses less digits than its factorization.

7015561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10031.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 7015561 is about 2648.6904311376. The cubic root of 7015561 is about 191.4347615720.

It can be divided in two parts, 7015 and 561, that multiplied together give a triangular number (3935415 = T₂₈₀₅).

The spelling of 7015561 in words is "seven million, fifteen thousand, five hundred sixty-one".