565551431 has 2 divisors, whose sum is σ = 565551432. Its totient is φ = 565551430.

The previous prime is 565551407. The next prime is 565551457. The reversal of 565551431 is 134155565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 565551431 - 2²² = 561357127 is a prime.

It is a super-2 number, since 2×565551431² = 639696842212295522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 565551391 and 565551400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (565551331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282775715 + 282775716.

It is an arithmetic number, because the mean of its divisors is an integer number (282775716).

Almost surely, 2^565551431 is an apocalyptic number.

565551431 is a deficient number, since it is larger than the sum of its proper divisors (1).

565551431 is an equidigital number, since it uses as much as digits as its factorization.

565551431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45000, while the sum is 35.

The square root of 565551431 is about 23781.3252574368. The cubic root of 565551431 is about 826.9718031294.

The spelling of 565551431 in words is "five hundred sixty-five million, five hundred fifty-one thousand, four hundred thirty-one".