561373633 has 2 divisors, whose sum is σ = 561373634. Its totient is φ = 561373632.

The previous prime is 561373607. The next prime is 561373669. The reversal of 561373633 is 336373165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320875569 + 240498064 = 17913^2 + 15508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561373633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561373592 and 561373601.

It is not a weakly prime, because it can be changed into another prime (561373433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280686816 + 280686817.

It is an arithmetic number, because the mean of its divisors is an integer number (280686817).

Almost surely, 2^561373633 is an apocalyptic number.

It is an amenable number.

561373633 is a deficient number, since it is larger than the sum of its proper divisors (1).

561373633 is an equidigital number, since it uses as much as digits as its factorization.

561373633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 37.

The square root of 561373633 is about 23693.3246506268. The cubic root of 561373633 is about 824.9304541315.

The spelling of 561373633 in words is "five hundred sixty-one million, three hundred seventy-three thousand, six hundred thirty-three".