611552801 has 2 divisors, whose sum is σ = 611552802. Its totient is φ = 611552800.

The previous prime is 611552797. The next prime is 611552827. The reversal of 611552801 is 108255116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 586802176 + 24750625 = 24224^2 + 4975^2 .

It is a cyclic number.

It is not a de Polignac number, because 611552801 - 2² = 611552797 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (611555801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305776400 + 305776401.

It is an arithmetic number, because the mean of its divisors is an integer number (305776401).

Almost surely, 2^611552801 is an apocalyptic number.

It is an amenable number.

611552801 is a deficient number, since it is larger than the sum of its proper divisors (1).

611552801 is an equidigital number, since it uses as much as digits as its factorization.

611552801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 29.

The square root of 611552801 is about 24729.5936278783. The cubic root of 611552801 is about 848.8116269853.

The spelling of 611552801 in words is "six hundred eleven million, five hundred fifty-two thousand, eight hundred one".