15401121 has 8 divisors (see below), whose sum is σ = 20553984. Its totient is φ = 10257840.

The previous prime is 15401093. The next prime is 15401137. The reversal of 15401121 is 12110451.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15401121 - 2⁷ = 15400993 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15401121.

It is not an unprimeable number, because it can be changed into a prime (15401161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3280 + ... + 6446.

It is an arithmetic number, because the mean of its divisors is an integer number (2569248).

Almost surely, 2^15401121 is an apocalyptic number.

It is an amenable number.

15401121 is a deficient number, since it is larger than the sum of its proper divisors (5152863).

15401121 is a wasteful number, since it uses less digits than its factorization.

15401121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4791.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 15401121 is about 3924.4262000960. The cubic root of 15401121 is about 248.8002300860.

Adding to 15401121 its reverse (12110451), we get a palindrome (27511572).

The spelling of 15401121 in words is "fifteen million, four hundred one thousand, one hundred twenty-one".