15066391 has 4 divisors (see below), whose sum is σ = 15185152. Its totient is φ = 14947632.

The previous prime is 15066379. The next prime is 15066407. The reversal of 15066391 is 19366051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19366051 = 227 ⋅85313.

It is a cyclic number.

It is not a de Polignac number, because 15066391 - 2⁷ = 15066263 is a prime.

It is a super-2 number, since 2×15066391² = 453992275529762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15066361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59190 + ... + 59443.

It is an arithmetic number, because the mean of its divisors is an integer number (3796288).

Almost surely, 2^15066391 is an apocalyptic number.

15066391 is a deficient number, since it is larger than the sum of its proper divisors (118761).

15066391 is a wasteful number, since it uses less digits than its factorization.

15066391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118760.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 15066391 is about 3881.5449243826. The cubic root of 15066391 is about 246.9845259037.

The spelling of 15066391 in words is "fifteen million, sixty-six thousand, three hundred ninety-one".