15405241 has 2 divisors, whose sum is σ = 15405242. Its totient is φ = 15405240.

The previous prime is 15405199. The next prime is 15405251. The reversal of 15405241 is 14250451.

15405241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15241216 + 164025 = 3904^2 + 405^2 .

It is an emirp because it is prime and its reverse (14250451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15405241 - 2⁷ = 15405113 is a prime.

It is not a weakly prime, because it can be changed into another prime (15405251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7702620 + 7702621.

It is an arithmetic number, because the mean of its divisors is an integer number (7702621).

Almost surely, 2^15405241 is an apocalyptic number.

It is an amenable number.

15405241 is a deficient number, since it is larger than the sum of its proper divisors (1).

15405241 is an equidigital number, since it uses as much as digits as its factorization.

15405241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 15405241 is about 3924.9510824977. The cubic root of 15405241 is about 248.8224138728.

Adding to 15405241 its reverse (14250451), we get a palindrome (29655692).

The spelling of 15405241 in words is "fifteen million, four hundred five thousand, two hundred forty-one".