15481413 has 6 divisors (see below), whose sum is σ = 22362054. Its totient is φ = 10320936.

The previous prime is 15481399. The next prime is 15481421. The reversal of 15481413 is 31418451.

It is a happy number.

15481413 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 15233409 + 248004 = 3903^2 + 498^2 .

It is not a de Polignac number, because 15481413 - 2⁹ = 15480901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15481463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 860070 + ... + 860087.

It is an arithmetic number, because the mean of its divisors is an integer number (3727009).

Almost surely, 2^15481413 is an apocalyptic number.

It is an amenable number.

15481413 is a deficient number, since it is larger than the sum of its proper divisors (6880641).

15481413 is a wasteful number, since it uses less digits than its factorization.

15481413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720163 (or 1720160 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 15481413 is about 3934.6426775503. The cubic root of 15481413 is about 249.2318448346.

Adding to 15481413 its reverse (31418451), we get a palindrome (46899864).

The spelling of 15481413 in words is "fifteen million, four hundred eighty-one thousand, four hundred thirteen".