12155541 has 8 divisors (see below), whose sum is σ = 16584480. Its totient is φ = 7915152.

The previous prime is 12155537. The next prime is 12155567. The reversal of 12155541 is 14555121.

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

It is not a de Polignac number, because 12155541 - 2² = 12155537 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46986 + ... + 47243.

It is an arithmetic number, because the mean of its divisors is an integer number (2073060).

Almost surely, 2^12155541 is an apocalyptic number.

It is an amenable number.

12155541 is a deficient number, since it is larger than the sum of its proper divisors (4428939).

12155541 is an equidigital number, since it uses as much as digits as its factorization.

12155541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94275.

The product of its digits is 1000, while the sum is 24.

The square root of 12155541 is about 3486.4797432367. The cubic root of 12155541 is about 229.9277719012.

The spelling of 12155541 in words is "twelve million, one hundred fifty-five thousand, five hundred forty-one".