561450023 has 8 divisors (see below), whose sum is σ = 575516256. Its totient is φ = 547401600.

The previous prime is 561449969. The next prime is 561450031. The reversal of 561450023 is 320054165.

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 561450023 - 2²² = 557255719 is a prime.

It is a super-2 number, since 2×561450023² = 630452256653401058, 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 = 561449974 and 561450001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561450623) 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, 78278 + ... + 85148.

It is an arithmetic number, because the mean of its divisors is an integer number (71939532).

Almost surely, 2^561450023 is an apocalyptic number.

561450023 is a deficient number, since it is larger than the sum of its proper divisors (14066233).

561450023 is a wasteful number, since it uses less digits than its factorization.

561450023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8905.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 561450023 is about 23694.9366532177. The cubic root of 561450023 is about 824.9678704353.

The spelling of 561450023 in words is "five hundred sixty-one million, four hundred fifty thousand, twenty-three".