565551423 has 32 divisors (see below), whose sum is σ = 867870720. Its totient is φ = 363756960.

The previous prime is 565551407. The next prime is 565551431. The reversal of 565551423 is 324155565.

565551423 is a `hidden beast` number, since 5 + 65 + 551 + 42 + 3 = 666.

It is not a de Polignac number, because 565551423 - 2⁴ = 565551407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565556423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86961 + ... + 93237.

It is an arithmetic number, because the mean of its divisors is an integer number (27120960).

Almost surely, 2^565551423 is an apocalyptic number.

565551423 is a deficient number, since it is larger than the sum of its proper divisors (302319297).

565551423 is a wasteful number, since it uses less digits than its factorization.

565551423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6404 (or 6398 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 565551423 is about 23781.3250892376. The cubic root of 565551423 is about 826.9717992301.

The spelling of 565551423 in words is "five hundred sixty-five million, five hundred fifty-one thousand, four hundred twenty-three".