565256540 has 24 divisors (see below), whose sum is σ = 1190045472. Its totient is φ = 225529920.

The previous prime is 565256537. The next prime is 565256597. The reversal of 565256540 is 45652565.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 565256494 and 565256503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27656 + ... + 43535.

It is an arithmetic number, because the mean of its divisors is an integer number (49585228).

Almost surely, 2^565256540 is an apocalyptic number.

It is an amenable number.

565256540 is an abundant number, since it is smaller than the sum of its proper divisors (624788932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

565256540 is a wasteful number, since it uses less digits than its factorization.

565256540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71597 (or 71595 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

The square root of 565256540 is about 23775.1243950479. The cubic root of 565256540 is about 826.8280443560.

The spelling of 565256540 in words is "five hundred sixty-five million, two hundred fifty-six thousand, five hundred forty".