561245254 has 4 divisors (see below), whose sum is σ = 841867884. Its totient is φ = 280622626.

The previous prime is 561245239. The next prime is 561245261. The reversal of 561245254 is 452542165.

561245254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140311312 + ... + 140311315.

It is an arithmetic number, because the mean of its divisors is an integer number (210466971).

Almost surely, 2^561245254 is an apocalyptic number.

561245254 is a deficient number, since it is larger than the sum of its proper divisors (280622630).

561245254 is a wasteful number, since it uses less digits than its factorization.

561245254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280622629.

The product of its digits is 48000, while the sum is 34.

The square root of 561245254 is about 23690.6153149301. The cubic root of 561245254 is about 824.8675656412.

The spelling of 561245254 in words is "five hundred sixty-one million, two hundred forty-five thousand, two hundred fifty-four".