2155642041 has 48 divisors (see below), whose sum is σ = 3641324544. Its totient is φ = 1108859136.

The previous prime is 2155642019. The next prime is 2155642051. The reversal of 2155642041 is 1402465512.

2155642041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2155642041 - 2⁹ = 2155641529 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2155642001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 131866 + ... + 147308.

It is an arithmetic number, because the mean of its divisors is an integer number (75860928).

Almost surely, 2^2155642041 is an apocalyptic number.

2155642041 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2155642041 is a deficient number, since it is larger than the sum of its proper divisors (1485682503).

2155642041 is a wasteful number, since it uses less digits than its factorization.

2155642041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15510 (or 15493 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 2155642041 is about 46428.8923085615. The cubic root of 2155642041 is about 1291.7908825908.

The spelling of 2155642041 in words is "two billion, one hundred fifty-five million, six hundred forty-two thousand, forty-one".