15401995 has 16 divisors (see below), whose sum is σ = 21336768. Its totient is φ = 10454400.

The previous prime is 15401993. The next prime is 15402001. The reversal of 15401995 is 59910451.

It is a happy number.

It is not a de Polignac number, because 15401995 - 2¹ = 15401993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15401995.

It is not an unprimeable number, because it can be changed into a prime (15401993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1357 + ... + 5713.

It is an arithmetic number, because the mean of its divisors is an integer number (1333548).

Almost surely, 2^15401995 is an apocalyptic number.

15401995 is a deficient number, since it is larger than the sum of its proper divisors (5934773).

15401995 is a wasteful number, since it uses less digits than its factorization.

15401995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4470.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 15401995 is about 3924.5375523748. The cubic root of 15401995 is about 248.8049363946.

The spelling of 15401995 in words is "fifteen million, four hundred one thousand, nine hundred ninety-five".