7361561 has 4 divisors (see below), whose sum is σ = 7794612. Its totient is φ = 6928512.

The previous prime is 7361551. The next prime is 7361597. The reversal of 7361561 is 1651637.

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 2343961 + 5017600 = 1531^2 + 2240^2 .

It is a cyclic number.

It is not a de Polignac number, because 7361561 - 2²² = 3167257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7361521) 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, 216500 + ... + 216533.

It is an arithmetic number, because the mean of its divisors is an integer number (1948653).

Almost surely, 2^7361561 is an apocalyptic number.

It is an amenable number.

7361561 is a deficient number, since it is larger than the sum of its proper divisors (433051).

7361561 is a wasteful number, since it uses less digits than its factorization.

7361561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433050.

The product of its digits is 3780, while the sum is 29.

The square root of 7361561 is about 2713.2196741141. The cubic root of 7361561 is about 194.5315161843.

The spelling of 7361561 in words is "seven million, three hundred sixty-one thousand, five hundred sixty-one".