15138552 has 96 divisors (see below), whose sum is σ = 44911440. Its totient is φ = 4224000.

The previous prime is 15138523. The next prime is 15138581. The reversal of 15138552 is 25583151.

It is an interprime number because it is at equal distance from previous prime (15138523) and next prime (15138581).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37552 + ... + 37952.

Almost surely, 2^15138552 is an apocalyptic number.

15138552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15138552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22455720).

15138552 is an abundant number, since it is smaller than the sum of its proper divisors (29772888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15138552 is a wasteful number, since it uses less digits than its factorization.

15138552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 430 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The square root of 15138552 is about 3890.8292175319. The cubic root of 15138552 is about 247.3782116859.

The spelling of 15138552 in words is "fifteen million, one hundred thirty-eight thousand, five hundred fifty-two".