613055591 has 2 divisors, whose sum is σ = 613055592. Its totient is φ = 613055590.

The previous prime is 613055587. The next prime is 613055609. The reversal of 613055591 is 195550316.

It is a happy number.

613055591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 613055591 - 2² = 613055587 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613055291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306527795 + 306527796.

It is an arithmetic number, because the mean of its divisors is an integer number (306527796).

Almost surely, 2^613055591 is an apocalyptic number.

613055591 is a deficient number, since it is larger than the sum of its proper divisors (1).

613055591 is an equidigital number, since it uses as much as digits as its factorization.

613055591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 613055591 is about 24759.9594304999. The cubic root of 613055591 is about 849.5063297158.

The spelling of 613055591 in words is "six hundred thirteen million, fifty-five thousand, five hundred ninety-one".