2006157 has 4 divisors (see below), whose sum is σ = 2674880. Its totient is φ = 1337436.

The previous prime is 2006141. The next prime is 2006159. The reversal of 2006157 is 7516002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2006157 - 2⁴ = 2006141 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006159) 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, 334357 + ... + 334362.

It is an arithmetic number, because the mean of its divisors is an integer number (668720).

2^2006157 is an apocalyptic number.

It is an amenable number.

2006157 is a deficient number, since it is larger than the sum of its proper divisors (668723).

2006157 is an equidigital number, since it uses as much as digits as its factorization.

2006157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668722.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 2006157 is about 1416.3887178314. The cubic root of 2006157 is about 126.1212614424.

The spelling of 2006157 in words is "two million, six thousand, one hundred fifty-seven".