2155513542 has 48 divisors (see below), whose sum is σ = 5335050240. Its totient is φ = 568485216.

The previous prime is 2155513531. The next prime is 2155513543. The reversal of 2155513542 is 2453155512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155513543) 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 23 ways as a sum of consecutive naturals, for example, 144742 + ... + 158937.

It is an arithmetic number, because the mean of its divisors is an integer number (111146880).

Almost surely, 2^2155513542 is an apocalyptic number.

2155513542 is an abundant number, since it is smaller than the sum of its proper divisors (3179536698).

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

2155513542 is a wasteful number, since it uses less digits than its factorization.

2155513542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303717 (or 303704 counting only the distinct ones).

The product of its digits is 30000, while the sum is 33.

The square root of 2155513542 is about 46427.5084621176. The cubic root of 2155513542 is about 1291.7652139607.

The spelling of 2155513542 in words is "two billion, one hundred fifty-five million, five hundred thirteen thousand, five hundred forty-two".