2153655541 has 4 divisors (see below), whose sum is σ = 2164814572. Its totient is φ = 2142496512.

The previous prime is 2153655533. The next prime is 2153655601. The reversal of 2153655541 is 1455563512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 305515441 + 1848140100 = 17479^2 + 42990^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153655541 - 2³ = 2153655533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2153655541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153655521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5579226 + ... + 5579611.

It is an arithmetic number, because the mean of its divisors is an integer number (541203643).

Almost surely, 2^2153655541 is an apocalyptic number.

It is an amenable number.

2153655541 is a deficient number, since it is larger than the sum of its proper divisors (11159031).

2153655541 is a wasteful number, since it uses less digits than its factorization.

2153655541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11159030.

The product of its digits is 90000, while the sum is 37.

The square root of 2153655541 is about 46407.4944486340. The cubic root of 2153655541 is about 1291.3939503843.

It can be divided in two parts, 21536 and 55541, that added together give a palindrome (77077).

The spelling of 2153655541 in words is "two billion, one hundred fifty-three million, six hundred fifty-five thousand, five hundred forty-one".