561782403 has 144 divisors (see below), whose sum is σ = 1095494400. Its totient is φ = 274337280.

The previous prime is 561782321. The next prime is 561782407. The reversal of 561782403 is 304287165.

561782403 is a `hidden beast` number, since 561 + 78 + 24 + 0 + 3 = 666.

It is not a de Polignac number, because 561782403 - 2¹⁷ = 561651331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561782407) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5153913 + ... + 5154021.

It is an arithmetic number, because the mean of its divisors is an integer number (7607600).

Almost surely, 2^561782403 is an apocalyptic number.

561782403 is a deficient number, since it is larger than the sum of its proper divisors (533711997).

561782403 is a wasteful number, since it uses less digits than its factorization.

561782403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 561782403 is about 23701.9493502117. The cubic root of 561782403 is about 825.1306327577.

The spelling of 561782403 in words is "five hundred sixty-one million, seven hundred eighty-two thousand, four hundred three".