561434265 has 96 divisors (see below), whose sum is σ = 1198229760. Its totient is φ = 237330432.

The previous prime is 561434239. The next prime is 561434267. The reversal of 561434265 is 562434165.

561434265 is a `hidden beast` number, since 5 + 614 + 34 + 2 + 6 + 5 = 666.

It is not a de Polignac number, because 561434265 - 2⁶ = 561434201 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (561434267) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 315057 + ... + 316833.

It is an arithmetic number, because the mean of its divisors is an integer number (12481560).

Almost surely, 2^561434265 is an apocalyptic number.

It is an amenable number.

561434265 is an abundant number, since it is smaller than the sum of its proper divisors (636795495).

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

561434265 is a wasteful number, since it uses less digits than its factorization.

561434265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871 (or 1868 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 561434265 is about 23694.6041325868. The cubic root of 561434265 is about 824.9601523454.

The spelling of 561434265 in words is "five hundred sixty-one million, four hundred thirty-four thousand, two hundred sixty-five".