561204037 has 2 divisors, whose sum is σ = 561204038. Its totient is φ = 561204036.

The previous prime is 561204011. The next prime is 561204041. The reversal of 561204037 is 730402165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 559133316 + 2070721 = 23646^2 + 1439^2 .

It is a cyclic number.

It is not a de Polignac number, because 561204037 - 2²⁷ = 426986309 is a prime.

It is a super-2 number, since 2×561204037² = 629899942290194738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 561203996 and 561204014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561204337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280602018 + 280602019.

It is an arithmetic number, because the mean of its divisors is an integer number (280602019).

Almost surely, 2^561204037 is an apocalyptic number.

It is an amenable number.

561204037 is a deficient number, since it is larger than the sum of its proper divisors (1).

561204037 is an equidigital number, since it uses as much as digits as its factorization.

561204037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 561204037 is about 23689.7453975344. The cubic root of 561204037 is about 824.8473728060.

The spelling of 561204037 in words is "five hundred sixty-one million, two hundred four thousand, thirty-seven".