561414157 has 2 divisors, whose sum is σ = 561414158. Its totient is φ = 561414156.

The previous prime is 561414097. The next prime is 561414163. The reversal of 561414157 is 751414165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 557857161 + 3556996 = 23619^2 + 1886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561414157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561414167) 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 as a sum of consecutive naturals, namely, 280707078 + 280707079.

It is an arithmetic number, because the mean of its divisors is an integer number (280707079).

Almost surely, 2^561414157 is an apocalyptic number.

It is an amenable number.

561414157 is a deficient number, since it is larger than the sum of its proper divisors (1).

561414157 is an equidigital number, since it uses as much as digits as its factorization.

561414157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 34.

The square root of 561414157 is about 23694.1798127726. The cubic root of 561414157 is about 824.9503034650.

The spelling of 561414157 in words is "five hundred sixty-one million, four hundred fourteen thousand, one hundred fifty-seven".