2153555 has 8 divisors (see below), whose sum is σ = 2720400. Its totient is φ = 1632096.

The previous prime is 2153551. The next prime is 2153561. The reversal of 2153555 is 5553512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2153555 - 2² = 2153551 is a prime.

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, 11240 + ... + 11429.

It is an arithmetic number, because the mean of its divisors is an integer number (340050).

2^2153555 is an apocalyptic number.

2153555 is a deficient number, since it is larger than the sum of its proper divisors (566845).

2153555 is a wasteful number, since it uses less digits than its factorization.

2153555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22693.

The product of its digits is 3750, while the sum is 26.

The square root of 2153555 is about 1467.4995741056. The cubic root of 2153555 is about 129.1373854311.

The spelling of 2153555 in words is "two million, one hundred fifty-three thousand, five hundred fifty-five".