801521241 has 4 divisors (see below), whose sum is σ = 1068694992. Its totient is φ = 534347492.

The previous prime is 801521233. The next prime is 801521249. The reversal of 801521241 is 142125108.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (801521233) and next prime (801521249).

It is a cyclic number.

It is not a de Polignac number, because 801521241 - 2³ = 801521233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (801521249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133586871 + ... + 133586876.

It is an arithmetic number, because the mean of its divisors is an integer number (267173748).

Almost surely, 2^801521241 is an apocalyptic number.

It is an amenable number.

801521241 is a deficient number, since it is larger than the sum of its proper divisors (267173751).

801521241 is a wasteful number, since it uses less digits than its factorization.

801521241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267173750.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 801521241 is about 28311.1504711483. The cubic root of 801521241 is about 928.9058087525.

Adding to 801521241 its reverse (142125108), we get a palindrome (943646349).

The spelling of 801521241 in words is "eight hundred one million, five hundred twenty-one thousand, two hundred forty-one".