561267258 has 16 divisors (see below), whose sum is σ = 1181615520. Its totient is φ = 177242256.

The previous prime is 561267253. The next prime is 561267293. The reversal of 561267258 is 852762165.

It is not an unprimeable number, because it can be changed into a prime (561267251) 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, 2461585 + ... + 2461812.

It is an arithmetic number, because the mean of its divisors is an integer number (73850970).

Almost surely, 2^561267258 is an apocalyptic number.

561267258 is an abundant number, since it is smaller than the sum of its proper divisors (620348262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561267258 is a wasteful number, since it uses less digits than its factorization.

561267258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4923421.

The product of its digits is 201600, while the sum is 42.

The square root of 561267258 is about 23691.0797136813. The cubic root of 561267258 is about 824.8783453307.

The spelling of 561267258 in words is "five hundred sixty-one million, two hundred sixty-seven thousand, two hundred fifty-eight".