2157013 has 8 divisors (see below), whose sum is σ = 2293920. Its totient is φ = 2022480.

The previous prime is 2157007. The next prime is 2157017. The reversal of 2157013 is 3107512.

2157013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-2157013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157017) 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 7 ways as a sum of consecutive naturals, for example, 1503 + ... + 2563.

It is an arithmetic number, because the mean of its divisors is an integer number (286740).

2^2157013 is an apocalyptic number.

It is an amenable number.

2157013 is a deficient number, since it is larger than the sum of its proper divisors (136907).

2157013 is a wasteful number, since it uses less digits than its factorization.

2157013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 2157013 is about 1468.6772960729. The cubic root of 2157013 is about 129.2064678362.

The spelling of 2157013 in words is "two million, one hundred fifty-seven thousand, thirteen".