561028951 has 16 divisors (see below), whose sum is σ = 680270400. Its totient is φ = 451676160.

The previous prime is 561028943. The next prime is 561028973. The reversal of 561028951 is 159820165.

It is a cyclic number.

It is not a de Polignac number, because 561028951 - 2³ = 561028943 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 561028951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561028921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57475 + ... + 66523.

It is an arithmetic number, because the mean of its divisors is an integer number (42516900).

Almost surely, 2^561028951 is an apocalyptic number.

561028951 is a deficient number, since it is larger than the sum of its proper divisors (119241449).

561028951 is a wasteful number, since it uses less digits than its factorization.

561028951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9594.

The product of its (nonzero) digits is 21600, while the sum is 37.

The square root of 561028951 is about 23686.0497128584. The cubic root of 561028951 is about 824.7615844896.

The spelling of 561028951 in words is "five hundred sixty-one million, twenty-eight thousand, nine hundred fifty-one".