561250982 has 4 divisors (see below), whose sum is σ = 841876476. Its totient is φ = 280625490.

The previous prime is 561250967. The next prime is 561251069. The reversal of 561250982 is 289052165.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140312744 + ... + 140312747.

It is an arithmetic number, because the mean of its divisors is an integer number (210469119).

Almost surely, 2^561250982 is an apocalyptic number.

561250982 is a deficient number, since it is larger than the sum of its proper divisors (280625494).

561250982 is a wasteful number, since it uses less digits than its factorization.

561250982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280625493.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 561250982 is about 23690.7362063740. The cubic root of 561250982 is about 824.8703717973.

The spelling of 561250982 in words is "five hundred sixty-one million, two hundred fifty thousand, nine hundred eighty-two".