15490401 has 16 divisors (see below), whose sum is σ = 21451008. Its totient is φ = 9936000.

The previous prime is 15490393. The next prime is 15490429. The reversal of 15490401 is 10409451.

It is not a de Polignac number, because 15490401 - 2³ = 15490393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15490001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7701 + ... + 9501.

It is an arithmetic number, because the mean of its divisors is an integer number (1340688).

Almost surely, 2^15490401 is an apocalyptic number.

It is an amenable number.

15490401 is a deficient number, since it is larger than the sum of its proper divisors (5960607).

15490401 is a wasteful number, since it uses less digits than its factorization.

15490401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 15490401 is about 3935.7846739881. The cubic root of 15490401 is about 249.2800674452.

Adding to 15490401 its reverse (10409451), we get a palindrome (25899852).

The spelling of 15490401 in words is "fifteen million, four hundred ninety thousand, four hundred one".