2155534404 has 24 divisors (see below), whose sum is σ = 5030749248. Its totient is φ = 718344480.

The previous prime is 2155534361. The next prime is 2155534411. The reversal of 2155534404 is 4044355512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40014 + ... + 76890.

It is an arithmetic number, because the mean of its divisors is an integer number (209614552).

Almost surely, 2^2155534404 is an apocalyptic number.

It is an amenable number.

2155534404 is an abundant number, since it is smaller than the sum of its proper divisors (2875214844).

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

2155534404 is a wasteful number, since it uses less digits than its factorization.

2155534404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41755 (or 41753 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 2155534404 is about 46427.7331344101. The cubic root of 2155534404 is about 1291.7693813696.

Adding to 2155534404 its reverse (4044355512), we get a palindrome (6199889916).

The spelling of 2155534404 in words is "two billion, one hundred fifty-five million, five hundred thirty-four thousand, four hundred four".