801148521 has 4 divisors (see below), whose sum is σ = 1068198032. Its totient is φ = 534099012.

The previous prime is 801148507. The next prime is 801148571. The reversal of 801148521 is 125841108.

It is a happy number.

801148521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 801148521 - 2⁷ = 801148393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (801148571) 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, 133524751 + ... + 133524756.

It is an arithmetic number, because the mean of its divisors is an integer number (267049508).

Almost surely, 2^801148521 is an apocalyptic number.

It is an amenable number.

801148521 is a deficient number, since it is larger than the sum of its proper divisors (267049511).

801148521 is a wasteful number, since it uses less digits than its factorization.

801148521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267049510.

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 801148521 is about 28304.5671403044. The cubic root of 801148521 is about 928.7618011515.

Adding to 801148521 its reverse (125841108), we get a palindrome (926989629).

The spelling of 801148521 in words is "eight hundred one million, one hundred forty-eight thousand, five hundred twenty-one".