16215241 has 4 divisors (see below), whose sum is σ = 18531712. Its totient is φ = 13898772.

The previous prime is 16215239. The next prime is 16215259. The reversal of 16215241 is 14251261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14251261 = 223 ⋅63907.

It is a cyclic number.

It is not a de Polignac number, because 16215241 - 2¹ = 16215239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16215041) 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, 1158225 + ... + 1158238.

It is an arithmetic number, because the mean of its divisors is an integer number (4632928).

Almost surely, 2^16215241 is an apocalyptic number.

It is an amenable number.

16215241 is a deficient number, since it is larger than the sum of its proper divisors (2316471).

16215241 is an equidigital number, since it uses as much as digits as its factorization.

16215241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316470.

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

The square root of 16215241 is about 4026.8152428439. The cubic root of 16215241 is about 253.1091250726.

The spelling of 16215241 in words is "sixteen million, two hundred fifteen thousand, two hundred forty-one".