561452531 has 4 divisors (see below), whose sum is σ = 562853064. Its totient is φ = 560052000.

The previous prime is 561452519. The next prime is 561452581. The reversal of 561452531 is 135254165.

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 561452531 - 2¹⁰ = 561451507 is a prime.

It is a super-2 number, since 2×561452531² = 630457889132611922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561452581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699665 + ... + 700466.

It is an arithmetic number, because the mean of its divisors is an integer number (140713266).

Almost surely, 2^561452531 is an apocalyptic number.

561452531 is a deficient number, since it is larger than the sum of its proper divisors (1400533).

561452531 is a wasteful number, since it uses less digits than its factorization.

561452531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400532.

The product of its digits is 18000, while the sum is 32.

The square root of 561452531 is about 23694.9895758576. The cubic root of 561452531 is about 824.9690988120.

The spelling of 561452531 in words is "five hundred sixty-one million, four hundred fifty-two thousand, five hundred thirty-one".