2153554 has 16 divisors (see below), whose sum is σ = 3514392. Its totient is φ = 983808.

The previous prime is 2153551. The next prime is 2153561. The reversal of 2153554 is 4553512.

It can be written as a sum of positive squares in 4 ways, for example, as 1476225 + 677329 = 1215^2 + 823^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2153551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2572 + ... + 3304.

2^2153554 is an apocalyptic number.

2153554 is a deficient number, since it is larger than the sum of its proper divisors (1360838).

2153554 is a wasteful number, since it uses less digits than its factorization.

2153554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861.

The product of its digits is 3000, while the sum is 25.

The square root of 2153554 is about 1467.4992333899. The cubic root of 2153554 is about 129.1373654428.

The spelling of 2153554 in words is "two million, one hundred fifty-three thousand, five hundred fifty-four".