12151885 has 8 divisors (see below), whose sum is σ = 14647320. Its totient is φ = 9678144.

The previous prime is 12151861. The next prime is 12151891. The reversal of 12151885 is 58815121.

It can be written as a sum of positive squares in 4 ways, for example, as 8099716 + 4052169 = 2846^2 + 2013^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12151885 - 2¹³ = 12143693 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4162 + ... + 6451.

It is an arithmetic number, because the mean of its divisors is an integer number (1830915).

Almost surely, 2^12151885 is an apocalyptic number.

It is an amenable number.

12151885 is a deficient number, since it is larger than the sum of its proper divisors (2495435).

12151885 is a wasteful number, since it uses less digits than its factorization.

12151885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10847.

The product of its digits is 3200, while the sum is 31.

The square root of 12151885 is about 3485.9553927152. The cubic root of 12151885 is about 229.9047179369.

The spelling of 12151885 in words is "twelve million, one hundred fifty-one thousand, eight hundred eighty-five".