15243851 has 6 divisors (see below), whose sum is σ = 17732700. Its totient is φ = 13066116.

The previous prime is 15243827. The next prime is 15243857. The reversal of 15243851 is 15834251.

15243851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-15243851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15243857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155501 + ... + 155598.

It is an arithmetic number, because the mean of its divisors is an integer number (2955450).

Almost surely, 2^15243851 is an apocalyptic number.

15243851 is a deficient number, since it is larger than the sum of its proper divisors (2488849).

15243851 is an equidigital number, since it uses as much as digits as its factorization.

15243851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311113 (or 311106 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 15243851 is about 3904.3374598003. The cubic root of 15243851 is about 247.9504486069.

The spelling of 15243851 in words is "fifteen million, two hundred forty-three thousand, eight hundred fifty-one".