564149431 has 4 divisors (see below), whose sum is σ = 568208200. Its totient is φ = 560090664.

The previous prime is 564149407. The next prime is 564149461. The reversal of 564149431 is 134941465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 564149431 - 2⁷ = 564149303 is a prime.

It is a super-2 number, since 2×564149431² = 636529160995247522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564149401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2029176 + ... + 2029453.

It is an arithmetic number, because the mean of its divisors is an integer number (142052050).

Almost surely, 2^564149431 is an apocalyptic number.

564149431 is a deficient number, since it is larger than the sum of its proper divisors (4058769).

564149431 is a wasteful number, since it uses less digits than its factorization.

564149431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058768.

The product of its digits is 51840, while the sum is 37.

The square root of 564149431 is about 23751.8300558083. The cubic root of 564149431 is about 826.2878842805.

The spelling of 564149431 in words is "five hundred sixty-four million, one hundred forty-nine thousand, four hundred thirty-one".