2153817 has 16 divisors (see below), whose sum is σ = 3213760. Its totient is φ = 1425600.

The previous prime is 2153813. The next prime is 2153819. The reversal of 2153817 is 7183512.

2153817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2153817 - 2² = 2153813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

2153817 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2153813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6342 + ... + 6672.

It is an arithmetic number, because the mean of its divisors is an integer number (200860).

2^2153817 is an apocalyptic number.

2153817 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2153817 is a deficient number, since it is larger than the sum of its proper divisors (1059943).

2153817 is a wasteful number, since it uses less digits than its factorization.

2153817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 575 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 2153817 is about 1467.5888388782. The cubic root of 2153817 is about 129.1426221402.

The spelling of 2153817 in words is "two million, one hundred fifty-three thousand, eight hundred seventeen".