561514537 has 2 divisors, whose sum is σ = 561514538. Its totient is φ = 561514536.

The previous prime is 561514531. The next prime is 561514567. The reversal of 561514537 is 735415165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323244441 + 238270096 = 17979^2 + 15436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561514537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561514496 and 561514505.

It is not a weakly prime, because it can be changed into another prime (561514531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280757268 + 280757269.

It is an arithmetic number, because the mean of its divisors is an integer number (280757269).

Almost surely, 2^561514537 is an apocalyptic number.

It is an amenable number.

561514537 is a deficient number, since it is larger than the sum of its proper divisors (1).

561514537 is an equidigital number, since it uses as much as digits as its factorization.

561514537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63000, while the sum is 37.

The square root of 561514537 is about 23696.2979598080. The cubic root of 561514537 is about 824.9994671561. Note that the first 3 decimals are identical.

The spelling of 561514537 in words is "five hundred sixty-one million, five hundred fourteen thousand, five hundred thirty-seven".