2154242252 has 24 divisors (see below), whose sum is σ = 3803605680. Its totient is φ = 1067523840.

The previous prime is 2154242221. The next prime is 2154242263. The reversal of 2154242252 is 2522424512.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375824 + ... + 381512.

It is an arithmetic number, because the mean of its divisors is an integer number (158483570).

Almost surely, 2^2154242252 is an apocalyptic number.

It is an amenable number.

2154242252 is a deficient number, since it is larger than the sum of its proper divisors (1649363428).

2154242252 is a wasteful number, since it uses less digits than its factorization.

2154242252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6521 (or 6519 counting only the distinct ones).

The product of its digits is 12800, while the sum is 29.

The square root of 2154242252 is about 46413.8153139774. The cubic root of 2154242252 is about 1291.5112093468.

Adding to 2154242252 its reverse (2522424512), we get a palindrome (4676666764).

The spelling of 2154242252 in words is "two billion, one hundred fifty-four million, two hundred forty-two thousand, two hundred fifty-two".