2155254404 has 12 divisors (see below), whose sum is σ = 3774630300. Its totient is φ = 1076788608.

The previous prime is 2155254383. The next prime is 2155254449. The reversal of 2155254404 is 4044525512.

It can be written as a sum of positive squares in 2 ways, for example, as 1497844804 + 657409600 = 38702^2 + 25640^2 .

It is a super-2 number, since 2×2155254404² = 9290243091922790432, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 203849 + ... + 214160.

It is an arithmetic number, because the mean of its divisors is an integer number (314552525).

Almost surely, 2^2155254404 is an apocalyptic number.

It is an amenable number.

2155254404 is a deficient number, since it is larger than the sum of its proper divisors (1619375896).

2155254404 is a wasteful number, since it uses less digits than its factorization.

2155254404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419302 (or 419300 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 2155254404 is about 46424.7175974179. The cubic root of 2155254404 is about 1291.7134461162.

Adding to 2155254404 its reverse (4044525512), we get a palindrome (6199779916).

The spelling of 2155254404 in words is "two billion, one hundred fifty-five million, two hundred fifty-four thousand, four hundred four".