561498953 has 16 divisors (see below), whose sum is σ = 578345040. Its totient is φ = 544997376.

The previous prime is 561498863. The next prime is 561498983. The reversal of 561498953 is 359894165.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 104693824 + 456805129 = 10232^2 + 21373^2 .

It is a cyclic number.

It is not a de Polignac number, because 561498953 - 2¹⁴ = 561482569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561498983) 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, 1666001 + ... + 1666337.

It is an arithmetic number, because the mean of its divisors is an integer number (36146565).

Almost surely, 2^561498953 is an apocalyptic number.

It is an amenable number.

561498953 is a deficient number, since it is larger than the sum of its proper divisors (16846087).

561498953 is a wasteful number, since it uses less digits than its factorization.

561498953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716.

The product of its digits is 1166400, while the sum is 50.

The square root of 561498953 is about 23695.9691297908. The cubic root of 561498953 is about 824.9918348748.

The spelling of 561498953 in words is "five hundred sixty-one million, four hundred ninety-eight thousand, nine hundred fifty-three".