2156953 has 4 divisors (see below), whose sum is σ = 2168100. Its totient is φ = 2145808.

The previous prime is 2156939. The next prime is 2156993. The reversal of 2156953 is 3596512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1172889 + 984064 = 1083^2 + 992^2 .

It is a cyclic number.

It is not a de Polignac number, because 2156953 - 2¹³ = 2148761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5278 + ... + 5671.

It is an arithmetic number, because the mean of its divisors is an integer number (542025).

2^2156953 is an apocalyptic number.

It is an amenable number.

2156953 is a deficient number, since it is larger than the sum of its proper divisors (11147).

2156953 is a wasteful number, since it uses less digits than its factorization.

2156953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11146.

The product of its digits is 8100, while the sum is 31.

The square root of 2156953 is about 1468.6568693878. The cubic root of 2156953 is about 129.2052698122.

The spelling of 2156953 in words is "two million, one hundred fifty-six thousand, nine hundred fifty-three".