561484953 has 20 divisors (see below), whose sum is σ = 861435300. Its totient is φ = 364204512.

The previous prime is 561484949. The next prime is 561484981. The reversal of 561484953 is 359484165.

561484953 is a `hidden beast` number, since 561 + 4 + 84 + 9 + 5 + 3 = 666.

561484953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 493372944 + 68112009 = 22212^2 + 8253^2 .

It is not a de Polignac number, because 561484953 - 2² = 561484949 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 561484899 and 561484908.

It is not an unprimeable number, because it can be changed into a prime (561484943) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 90678 + ... + 96671.

It is an arithmetic number, because the mean of its divisors is an integer number (43071765).

Almost surely, 2^561484953 is an apocalyptic number.

It is an amenable number.

561484953 is a deficient number, since it is larger than the sum of its proper divisors (299950347).

561484953 is a wasteful number, since it uses less digits than its factorization.

561484953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187398 (or 187389 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 561484953 is about 23695.6737190568. The cubic root of 561484953 is about 824.9849782389.

The spelling of 561484953 in words is "five hundred sixty-one million, four hundred eighty-four thousand, nine hundred fifty-three".