2155510542 has 8 divisors (see below), whose sum is σ = 4311021096. Its totient is φ = 718503512.

The previous prime is 2155510541. The next prime is 2155510547. The reversal of 2155510542 is 2450155512.

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

2155510542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155510541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179625873 + ... + 179625884.

It is an arithmetic number, because the mean of its divisors is an integer number (538877637).

Almost surely, 2^2155510542 is an apocalyptic number.

2155510542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2155510542 is a wasteful number, since it uses less digits than its factorization.

2155510542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359251762.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 2155510542 is about 46427.4761536743. The cubic root of 2155510542 is about 1291.7646146762.

The spelling of 2155510542 in words is "two billion, one hundred fifty-five million, five hundred ten thousand, five hundred forty-two".