561494072 has 16 divisors (see below), whose sum is σ = 1086763200. Its totient is φ = 271690560.

The previous prime is 561494069. The next prime is 561494077. The reversal of 561494072 is 270494165.

561494072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×561494072² = 630551185782282368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561494077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131797 + ... + 1132292.

It is an arithmetic number, because the mean of its divisors is an integer number (67922700).

Almost surely, 2^561494072 is an apocalyptic number.

It is an amenable number.

561494072 is a deficient number, since it is larger than the sum of its proper divisors (525269128).

561494072 is a wasteful number, since it uses less digits than its factorization.

561494072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264126 (or 2264122 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 561494072 is about 23695.8661373667. The cubic root of 561494072 is about 824.9894443706.

The spelling of 561494072 in words is "five hundred sixty-one million, four hundred ninety-four thousand, seventy-two".