2661554252 has 24 divisors (see below), whose sum is σ = 5324229120. Its totient is φ = 1140426000.

The previous prime is 2661554243. The next prime is 2661554293. The reversal of 2661554252 is 2524551662.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 211127 + ... + 223377.

It is an arithmetic number, because the mean of its divisors is an integer number (221842880).

Almost surely, 2^2661554252 is an apocalyptic number.

It is an amenable number.

2661554252 is an abundant number, since it is smaller than the sum of its proper divisors (2662674868).

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

2661554252 is a wasteful number, since it uses less digits than its factorization.

2661554252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20021 (or 20019 counting only the distinct ones).

The product of its digits is 144000, while the sum is 38.

The square root of 2661554252 is about 51590.2534593502. The cubic root of 2661554252 is about 1385.8357941904.

The spelling of 2661554252 in words is "two billion, six hundred sixty-one million, five hundred fifty-four thousand, two hundred fifty-two".