15148221 has 8 divisors (see below), whose sum is σ = 22033824. Its totient is φ = 9180720.

The previous prime is 15148219. The next prime is 15148223. The reversal of 15148221 is 12284151.

It is an interprime number because it is at equal distance from previous prime (15148219) and next prime (15148223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15148221 - 2¹ = 15148219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15148191 and 15148200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15148223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229486 + ... + 229551.

It is an arithmetic number, because the mean of its divisors is an integer number (2754228).

Almost surely, 2^15148221 is an apocalyptic number.

15148221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15148221 is a deficient number, since it is larger than the sum of its proper divisors (6885603).

15148221 is a wasteful number, since it uses less digits than its factorization.

15148221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459051.

The product of its digits is 640, while the sum is 24.

The square root of 15148221 is about 3892.0715563823. The cubic root of 15148221 is about 247.4308673356.

The spelling of 15148221 in words is "fifteen million, one hundred forty-eight thousand, two hundred twenty-one".