561514531 has 2 divisors, whose sum is σ = 561514532. Its totient is φ = 561514530.

The previous prime is 561514517. The next prime is 561514537. The reversal of 561514531 is 135415165.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561514531 - 2²¹ = 559417379 is a prime.

It is a super-2 number, since 2×561514531² = 630597137048299922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 561514493 and 561514502.

It is not a weakly prime, because it can be changed into another prime (561514537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280757265 + 280757266.

It is an arithmetic number, because the mean of its divisors is an integer number (280757266).

Almost surely, 2^561514531 is an apocalyptic number.

561514531 is a deficient number, since it is larger than the sum of its proper divisors (1).

561514531 is an equidigital number, since it uses as much as digits as its factorization.

561514531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 31.

The square root of 561514531 is about 23696.2978332059. The cubic root of 561514531 is about 824.9994642176. Note that the first 3 decimals are identical.

Adding to 561514531 its reverse (135415165), we get a palindrome (696929696).

The spelling of 561514531 in words is "five hundred sixty-one million, five hundred fourteen thousand, five hundred thirty-one".