2153855 has 8 divisors (see below), whose sum is σ = 2819664. Its totient is φ = 1566400.

The previous prime is 2153839. The next prime is 2153861. The reversal of 2153855 is 5583512.

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

It is not a de Polignac number, because 2153855 - 2⁴ = 2153839 is a prime.

It is a super-2 number, since 2×2153855² = 9278182722050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 19526 + ... + 19635.

It is an arithmetic number, because the mean of its divisors is an integer number (352458).

2^2153855 is an apocalyptic number.

2153855 is a deficient number, since it is larger than the sum of its proper divisors (665809).

2153855 is a wasteful number, since it uses less digits than its factorization.

2153855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39177.

The product of its digits is 6000, while the sum is 29.

The square root of 2153855 is about 1467.6017852265. The cubic root of 2153855 is about 129.1433816276.

The spelling of 2153855 in words is "two million, one hundred fifty-three thousand, eight hundred fifty-five".