561400159 has 8 divisors (see below), whose sum is σ = 569265840. Its totient is φ = 553585536.

The previous prime is 561400153. The next prime is 561400181. The reversal of 561400159 is 951004165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 561400159 - 2⁵ = 561400127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561400159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561400153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9652 + ... + 34870.

It is an arithmetic number, because the mean of its divisors is an integer number (71158230).

Almost surely, 2^561400159 is an apocalyptic number.

561400159 is a deficient number, since it is larger than the sum of its proper divisors (7865681).

561400159 is a wasteful number, since it uses less digits than its factorization.

561400159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25529.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 561400159 is about 23693.8844219347. The cubic root of 561400159 is about 824.9434471182.

The spelling of 561400159 in words is "five hundred sixty-one million, four hundred thousand, one hundred fifty-nine".