801172013 has 2 divisors, whose sum is σ = 801172014. Its totient is φ = 801172012.

The previous prime is 801172003. The next prime is 801172019. The reversal of 801172013 is 310271108.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 626350729 + 174821284 = 25027^2 + 13222^2 .

It is a cyclic number.

It is not a de Polignac number, because 801172013 - 2¹⁴ = 801155629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 801172013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (801172019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400586006 + 400586007.

It is an arithmetic number, because the mean of its divisors is an integer number (400586007).

Almost surely, 2^801172013 is an apocalyptic number.

It is an amenable number.

801172013 is a deficient number, since it is larger than the sum of its proper divisors (1).

801172013 is an equidigital number, since it uses as much as digits as its factorization.

801172013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 801172013 is about 28304.9821232941. The cubic root of 801172013 is about 928.7708790600.

The spelling of 801172013 in words is "eight hundred one million, one hundred seventy-two thousand, thirteen".