561024977 has 4 divisors (see below), whose sum is σ = 564384576. Its totient is φ = 557665380.

The previous prime is 561024953. The next prime is 561025009. The reversal of 561024977 is 779420165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 561024977 - 2⁸ = 561024721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561024907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1679549 + ... + 1679882.

It is an arithmetic number, because the mean of its divisors is an integer number (141096144).

Almost surely, 2^561024977 is an apocalyptic number.

It is an amenable number.

561024977 is a deficient number, since it is larger than the sum of its proper divisors (3359599).

561024977 is a wasteful number, since it uses less digits than its factorization.

561024977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359598.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 561024977 is about 23685.9658236687. The cubic root of 561024977 is about 824.7596371092.

The spelling of 561024977 in words is "five hundred sixty-one million, twenty-four thousand, nine hundred seventy-seven".