15140641 has 4 divisors (see below), whose sum is σ = 15199812. Its totient is φ = 15081472.

The previous prime is 15140621. The next prime is 15140689. The reversal of 15140641 is 14604151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14604151 = 521 ⋅28031.

It can be written as a sum of positive squares in 2 ways, for example, as 13395600 + 1745041 = 3660^2 + 1321^2 .

It is a cyclic number.

It is not a de Polignac number, because 15140641 - 2⁹ = 15140129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15140621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29200 + ... + 29713.

It is an arithmetic number, because the mean of its divisors is an integer number (3799953).

Almost surely, 2^15140641 is an apocalyptic number.

It is an amenable number.

15140641 is a deficient number, since it is larger than the sum of its proper divisors (59171).

15140641 is an equidigital number, since it uses as much as digits as its factorization.

15140641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59170.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 15140641 is about 3891.0976600440. The cubic root of 15140641 is about 247.3895899057.

Adding to 15140641 its reverse (14604151), we get a palindrome (29744792).

The spelling of 15140641 in words is "fifteen million, one hundred forty thousand, six hundred forty-one".