2154171452 has 6 divisors (see below), whose sum is σ = 3769800048. Its totient is φ = 1077085724.

The previous prime is 2154171451. The next prime is 2154171457. The reversal of 2154171452 is 2541714512.

It is a super-2 number, since 2×2154171452² = 9280909289223576608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154171451) by changing a digit.

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 as a sum of consecutive naturals, namely, 269271428 + ... + 269271435.

It is an arithmetic number, because the mean of its divisors is an integer number (628300008).

Almost surely, 2^2154171452 is an apocalyptic number.

It is an amenable number.

2154171452 is a deficient number, since it is larger than the sum of its proper divisors (1615628596).

2154171452 is a wasteful number, since it uses less digits than its factorization.

2154171452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538542867 (or 538542865 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 2154171452 is about 46413.0526037665. The cubic root of 2154171452 is about 1291.4970605209.

Adding to 2154171452 its reverse (2541714512), we get a palindrome (4695885964).

The spelling of 2154171452 in words is "two billion, one hundred fifty-four million, one hundred seventy-one thousand, four hundred fifty-two".