561233757 has 16 divisors (see below), whose sum is σ = 856766592. Its totient is φ = 320122560.

The previous prime is 561233753. The next prime is 561233791. The reversal of 561233757 is 757332165.

It is not a de Polignac number, because 561233757 - 2² = 561233753 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561233753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12294 + ... + 35687.

It is an arithmetic number, because the mean of its divisors is an integer number (53547912).

Almost surely, 2^561233757 is an apocalyptic number.

It is an amenable number.

561233757 is a deficient number, since it is larger than the sum of its proper divisors (295532835).

561233757 is a wasteful number, since it uses less digits than its factorization.

561233757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48548.

The product of its digits is 132300, while the sum is 39.

The square root of 561233757 is about 23690.3726648611. The cubic root of 561233757 is about 824.8619331855.

The spelling of 561233757 in words is "five hundred sixty-one million, two hundred thirty-three thousand, seven hundred fifty-seven".