801388251 has 12 divisors (see below), whose sum is σ = 1218485320. Its totient is φ = 506139840.

The previous prime is 801388243. The next prime is 801388253. The reversal of 801388251 is 152883108.

It is not a de Polignac number, because 801388251 - 2³ = 801388243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (801388253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2343070 + ... + 2343411.

Almost surely, 2^801388251 is an apocalyptic number.

801388251 is a deficient number, since it is larger than the sum of its proper divisors (417097069).

801388251 is a wasteful number, since it uses less digits than its factorization.

801388251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4686506 (or 4686503 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 801388251 is about 28308.8016524896. The cubic root of 801388251 is about 928.8544306104.

The spelling of 801388251 in words is "eight hundred one million, three hundred eighty-eight thousand, two hundred fifty-one".