565253428 has 18 divisors (see below), whose sum is σ = 1034075714. Its totient is φ = 270337584.

The previous prime is 565253419. The next prime is 565253431. The reversal of 565253428 is 824352565.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 533240464 + 32012964 = 23092^2 + 5658^2 .

It is a super-2 number, since 2×565253428² = 639022875731502368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131451 + ... + 135682.

Almost surely, 2^565253428 is an apocalyptic number.

It is an amenable number.

565253428 is a deficient number, since it is larger than the sum of its proper divisors (468822286).

565253428 is a wasteful number, since it uses less digits than its factorization.

565253428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267183 (or 267158 counting only the distinct ones).

The product of its digits is 288000, while the sum is 40.

The square root of 565253428 is about 23775.0589484022. The cubic root of 565253428 is about 826.8265269956.

The spelling of 565253428 in words is "five hundred sixty-five million, two hundred fifty-three thousand, four hundred twenty-eight".