561051077 has 4 divisors (see below), whose sum is σ = 561958080. Its totient is φ = 560144076.

The previous prime is 561051041. The next prime is 561051107. The reversal of 561051077 is 770150165.

561051077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 561051077 - 2²⁰ = 560002501 is a prime.

It is a super-2 number, since 2×561051077² = 629556622005719858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561051037) 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, 452573 + ... + 453810.

It is an arithmetic number, because the mean of its divisors is an integer number (140489520).

Almost surely, 2^561051077 is an apocalyptic number.

It is an amenable number.

561051077 is a deficient number, since it is larger than the sum of its proper divisors (907003).

561051077 is an equidigital number, since it uses as much as digits as its factorization.

561051077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907002.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 561051077 is about 23686.5167764279. The cubic root of 561051077 is about 824.7724267316.

The spelling of 561051077 in words is "five hundred sixty-one million, fifty-one thousand, seventy-seven".