561203438 has 4 divisors (see below), whose sum is σ = 841805160. Its totient is φ = 280601718.

The previous prime is 561203417. The next prime is 561203441. The reversal of 561203438 is 834302165.

561203438 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, 140300858 + ... + 140300861.

It is an arithmetic number, because the mean of its divisors is an integer number (210451290).

Almost surely, 2^561203438 is an apocalyptic number.

561203438 is a deficient number, since it is larger than the sum of its proper divisors (280601722).

561203438 is a wasteful number, since it uses less digits than its factorization.

561203438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280601721.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 561203438 is about 23689.7327549299. The cubic root of 561203438 is about 824.8470793395.

The spelling of 561203438 in words is "five hundred sixty-one million, two hundred three thousand, four hundred thirty-eight".