2155460404 has 6 divisors (see below), whose sum is σ = 3772055714. Its totient is φ = 1077730200.

The previous prime is 2155460389. The next prime is 2155460407. The reversal of 2155460404 is 4040645512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1789120804 + 366339600 = 42298^2 + 19140^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155460407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269432547 + ... + 269432554.

Almost surely, 2^2155460404 is an apocalyptic number.

It is an amenable number.

2155460404 is a deficient number, since it is larger than the sum of its proper divisors (1616595310).

2155460404 is a wasteful number, since it uses less digits than its factorization.

2155460404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538865105 (or 538865103 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 2155460404 is about 46426.9361901041. The cubic root of 2155460404 is about 1291.7545989521.

The spelling of 2155460404 in words is "two billion, one hundred fifty-five million, four hundred sixty thousand, four hundred four".