801733561 has 2 divisors, whose sum is σ = 801733562. Its totient is φ = 801733560.

The previous prime is 801733547. The next prime is 801733571. The reversal of 801733561 is 165337108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 781761600 + 19971961 = 27960^2 + 4469^2 .

It is a cyclic number.

It is not a de Polignac number, because 801733561 - 2⁵ = 801733529 is a prime.

It is not a weakly prime, because it can be changed into another prime (801733511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400866780 + 400866781.

It is an arithmetic number, because the mean of its divisors is an integer number (400866781).

Almost surely, 2^801733561 is an apocalyptic number.

It is an amenable number.

801733561 is a deficient number, since it is larger than the sum of its proper divisors (1).

801733561 is an equidigital number, since it uses as much as digits as its factorization.

801733561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 801733561 is about 28314.8999821649. The cubic root of 801733561 is about 928.9878227441.

The spelling of 801733561 in words is "eight hundred one million, seven hundred thirty-three thousand, five hundred sixty-one".