15552243 has 48 divisors (see below), whose sum is σ = 27396096. Its totient is φ = 8631360.

The previous prime is 15552233. The next prime is 15552259. The reversal of 15552243 is 34225551.

It is a happy number.

It is not a de Polignac number, because 15552243 - 2⁴ = 15552227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (15552233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69630 + ... + 69852.

It is an arithmetic number, because the mean of its divisors is an integer number (570752).

Almost surely, 2^15552243 is an apocalyptic number.

15552243 is a deficient number, since it is larger than the sum of its proper divisors (11843853).

15552243 is an equidigital number, since it uses as much as digits as its factorization.

15552243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 274 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 15552243 is about 3943.6332233107. The cubic root of 15552243 is about 249.6113588118.

Adding to 15552243 its reverse (34225551), we get a palindrome (49777794).

It can be divided in two parts, 15552 and 243, that multiplied together give a square (3779136 = 1944²).

The spelling of 15552243 in words is "fifteen million, five hundred fifty-two thousand, two hundred forty-three".