531062561 has 4 divisors (see below), whose sum is σ = 531265092. Its totient is φ = 530860032.

The previous prime is 531062557. The next prime is 531062573. The reversal of 531062561 is 165260135.

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

It can be written as a sum of positive squares in 2 ways, for example, as 474150625 + 56911936 = 21775^2 + 7544^2 .

It is a cyclic number.

It is not a de Polignac number, because 531062561 - 2² = 531062557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531062501) 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, 97280 + ... + 102593.

It is an arithmetic number, because the mean of its divisors is an integer number (132816273).

Almost surely, 2^531062561 is an apocalyptic number.

It is an amenable number.

531062561 is a deficient number, since it is larger than the sum of its proper divisors (202531).

531062561 is a wasteful number, since it uses less digits than its factorization.

531062561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202530.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 531062561 is about 23044.7946617018. The cubic root of 531062561 is about 809.8076874133.

The spelling of 531062561 in words is "five hundred thirty-one million, sixty-two thousand, five hundred sixty-one".