561496455 has 96 divisors (see below), whose sum is σ = 1144765440. Its totient is φ = 261740160.

The previous prime is 561496433. The next prime is 561496499. The reversal of 561496455 is 554694165.

561496455 is a `hidden beast` number, since 56 + 149 + 6 + 455 = 666.

561496455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561496455 - 2⁶ = 561496391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 561496455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 299170 + ... + 301040.

It is an arithmetic number, because the mean of its divisors is an integer number (11924640).

Almost surely, 2^561496455 is an apocalyptic number.

561496455 is an abundant number, since it is smaller than the sum of its proper divisors (583268985).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561496455 is a wasteful number, since it uses less digits than its factorization.

561496455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923 (or 1911 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 561496455 is about 23695.9164203455. The cubic root of 561496455 is about 824.9906114634.

The spelling of 561496455 in words is "five hundred sixty-one million, four hundred ninety-six thousand, four hundred fifty-five".