561268477 has 16 divisors (see below), whose sum is σ = 702922752. Its totient is φ = 435377520.

The previous prime is 561268459. The next prime is 561268507. The reversal of 561268477 is 774862165.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 561268477 - 2²⁷ = 427050749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561268427) 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, 828 + ... + 33514.

It is an arithmetic number, because the mean of its divisors is an integer number (43932672).

Almost surely, 2^561268477 is an apocalyptic number.

It is an amenable number.

561268477 is a deficient number, since it is larger than the sum of its proper divisors (141654275).

561268477 is a wasteful number, since it uses less digits than its factorization.

561268477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32928.

The product of its digits is 564480, while the sum is 46.

The square root of 561268477 is about 23691.1054406501. The cubic root of 561268477 is about 824.8789425067.

The spelling of 561268477 in words is "five hundred sixty-one million, two hundred sixty-eight thousand, four hundred seventy-seven".