561607357 has 4 divisors (see below), whose sum is σ = 561689856. Its totient is φ = 561524860.

The previous prime is 561607289. The next prime is 561607363. The reversal of 561607357 is 753706165.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 753706165 = 5 ⋅150741233.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561607357 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561607957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30019 + ... + 44992.

It is an arithmetic number, because the mean of its divisors is an integer number (140422464).

Almost surely, 2^561607357 is an apocalyptic number.

It is an amenable number.

561607357 is a deficient number, since it is larger than the sum of its proper divisors (82499).

561607357 is an equidigital number, since it uses as much as digits as its factorization.

561607357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82498.

The product of its (nonzero) digits is 132300, while the sum is 40.

The square root of 561607357 is about 23698.2564126562. The cubic root of 561607357 is about 825.0449229288.

The spelling of 561607357 in words is "five hundred sixty-one million, six hundred seven thousand, three hundred fifty-seven".