12151500 has 48 divisors (see below), whose sum is σ = 35389536. Its totient is φ = 3240000.

The previous prime is 12151483. The next prime is 12151501. The reversal of 12151500 is 515121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12151500.

It is not an unprimeable number, because it can be changed into a prime (12151501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2551 + ... + 5550.

It is an arithmetic number, because the mean of its divisors is an integer number (737282).

Almost surely, 2^12151500 is an apocalyptic number.

12151500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12151500 is an abundant number, since it is smaller than the sum of its proper divisors (23238036).

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

12151500 is a wasteful number, since it uses less digits than its factorization.

12151500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8123 (or 8111 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 12151500 is about 3485.9001706876. The cubic root of 12151500 is about 229.9022899390.

Adding to 12151500 its reverse (515121), we get a palindrome (12666621).

It can be divided in two parts, 1215 and 1500, that multiplied together give a square (1822500 = 1350²).

The spelling of 12151500 in words is "twelve million, one hundred fifty-one thousand, five hundred".