12151957 has 12 divisors (see below), whose sum is σ = 13395780. Its totient is φ = 10972416.

The previous prime is 12151927. The next prime is 12151961. The reversal of 12151957 is 75915121.

It can be written as a sum of positive squares in 6 ways, for example, as 34596 + 12117361 = 186^2 + 3481^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12151957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12151927) 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 11 ways as a sum of consecutive naturals, for example, 77323 + ... + 77479.

It is an arithmetic number, because the mean of its divisors is an integer number (1116315).

Almost surely, 2^12151957 is an apocalyptic number.

12151957 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12151957 is a deficient number, since it is larger than the sum of its proper divisors (1243823).

12151957 is an equidigital number, since it uses as much as digits as its factorization.

12151957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 203 counting only the distinct ones).

The product of its digits is 3150, while the sum is 31.

The square root of 12151957 is about 3485.9657198544. The cubic root of 12151957 is about 229.9051719983.

The spelling of 12151957 in words is "twelve million, one hundred fifty-one thousand, nine hundred fifty-seven".