2155541031252 has 36 divisors (see below), whose sum is σ = 6227118535456. Its totient is φ = 615868866000.

The previous prime is 2155541031209. The next prime is 2155541031257. The reversal of 2155541031252 is 2521301455512.

2155541031252 is a `hidden beast` number, since 2 + 1 + 55 + 541 + 0 + 3 + 12 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155541031257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4276866874 + ... + 4276867377.

Almost surely, 2^{2155541031252} is an apocalyptic number.

It is an amenable number.

2155541031252 is an abundant number, since it is smaller than the sum of its proper divisors (4071577504204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155541031252 is a wasteful number, since it uses less digits than its factorization.

2155541031252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8553734268 (or 8553734263 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 2155541031252 its reverse (2521301455512), we get a palindrome (4676842486764).

The spelling of 2155541031252 in words is "two trillion, one hundred fifty-five billion, five hundred forty-one million, thirty-one thousand, two hundred fifty-two".