562752721 has 8 divisors (see below), whose sum is σ = 583268840. Its totient is φ = 542515968.

The previous prime is 562752637. The next prime is 562752727. The reversal of 562752721 is 127257265.

It can be written as a sum of positive squares in 4 ways, for example, as 320016321 + 242736400 = 17889^2 + 15580^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 562752721 - 2⁹ = 562752209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (562752727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65736 + ... + 73801.

It is an arithmetic number, because the mean of its divisors is an integer number (72908605).

Almost surely, 2^562752721 is an apocalyptic number.

It is an amenable number.

562752721 is a deficient number, since it is larger than the sum of its proper divisors (20516119).

562752721 is a wasteful number, since it uses less digits than its factorization.

562752721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139683.

The product of its digits is 58800, while the sum is 37.

The square root of 562752721 is about 23722.4096794571. The cubic root of 562752721 is about 825.6054183595.

It can be divided in two parts, 56275 and 2721, that added together give a triangular number (58996 = T₃₄₃).

The spelling of 562752721 in words is "five hundred sixty-two million, seven hundred fifty-two thousand, seven hundred twenty-one".