12757155 has 16 divisors (see below), whose sum is σ = 20467104. Its totient is φ = 6785280.

The previous prime is 12757139. The next prime is 12757177. The reversal of 12757155 is 55175721.

It is not a de Polignac number, because 12757155 - 2⁴ = 12757139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5925 + ... + 7785.

It is an arithmetic number, because the mean of its divisors is an integer number (1279194).

Almost surely, 2^12757155 is an apocalyptic number.

12757155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12757155 is a deficient number, since it is larger than the sum of its proper divisors (7709949).

12757155 is a wasteful number, since it uses less digits than its factorization.

12757155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326.

The product of its digits is 12250, while the sum is 33.

The square root of 12757155 is about 3571.7159741502. The cubic root of 12757155 is about 233.6601282616.

The spelling of 12757155 in words is "twelve million, seven hundred fifty-seven thousand, one hundred fifty-five".