5321561 has 16 divisors (see below), whose sum is σ = 6500736. Its totient is φ = 4252416.

The previous prime is 5321507. The next prime is 5321593. The reversal of 5321561 is 1651235.

5321561 = 379² + 380² + ... + 412².

It is not a de Polignac number, because 5321561 - 2⁶ = 5321497 is a prime.

It is a super-2 number, since 2×5321561² = 56638022953442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5321161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23330 + ... + 23556.

It is an arithmetic number, because the mean of its divisors is an integer number (406296).

Almost surely, 2^5321561 is an apocalyptic number.

It is an amenable number.

5321561 is a deficient number, since it is larger than the sum of its proper divisors (1179175).

5321561 is a wasteful number, since it uses less digits than its factorization.

5321561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448.

The product of its digits is 900, while the sum is 23.

The square root of 5321561 is about 2306.8508837807. The cubic root of 5321561 is about 174.5874472417.

Adding to 5321561 its reverse (1651235), we get a palindrome (6972796).

The spelling of 5321561 in words is "five million, three hundred twenty-one thousand, five hundred sixty-one".