561453131 has 4 divisors (see below), whose sum is σ = 564555264. Its totient is φ = 558351000.

The previous prime is 561453091. The next prime is 561453163. The reversal of 561453131 is 131354165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131354165 = 5 ⋅26270833.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561453131 is a prime.

It is a super-2 number, since 2×561453131² = 630459236619406322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561453094 and 561453103.

It is not an unprimeable number, because it can be changed into a prime (561453181) 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, 1550795 + ... + 1551156.

It is an arithmetic number, because the mean of its divisors is an integer number (141138816).

Almost surely, 2^561453131 is an apocalyptic number.

561453131 is a deficient number, since it is larger than the sum of its proper divisors (3102133).

561453131 is a wasteful number, since it uses less digits than its factorization.

561453131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102132.

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

The square root of 561453131 is about 23695.0022367587. The cubic root of 561453131 is about 824.9693926814.

The spelling of 561453131 in words is "five hundred sixty-one million, four hundred fifty-three thousand, one hundred thirty-one".