2156653 has 8 divisors (see below), whose sum is σ = 2208096. Its totient is φ = 2106000.

The previous prime is 2156647. The next prime is 2156659. The reversal of 2156653 is 3566512.

It is an interprime number because it is at equal distance from previous prime (2156647) and next prime (2156659).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2156653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156659) 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, 13150 + ... + 13312.

It is an arithmetic number, because the mean of its divisors is an integer number (276012).

2^2156653 is an apocalyptic number.

It is an amenable number.

2156653 is a deficient number, since it is larger than the sum of its proper divisors (51443).

2156653 is a wasteful number, since it uses less digits than its factorization.

2156653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395.

The product of its digits is 5400, while the sum is 28.

The square root of 2156653 is about 1468.5547317005. The cubic root of 2156653 is about 129.1992793590.

It can be divided in two parts, 2156 and 653, that added together give a square (2809 = 53²).

The spelling of 2156653 in words is "two million, one hundred fifty-six thousand, six hundred fifty-three".