2158057 has 4 divisors (see below), whose sum is σ = 2354256. Its totient is φ = 1961860.

The previous prime is 2158033. The next prime is 2158061. The reversal of 2158057 is 7508512.

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 a cyclic number.

It is not a de Polignac number, because 2158057 - 2¹¹ = 2156009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2158027) 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, 98083 + ... + 98104.

It is an arithmetic number, because the mean of its divisors is an integer number (588564).

2^2158057 is an apocalyptic number.

It is an amenable number.

2158057 is a deficient number, since it is larger than the sum of its proper divisors (196199).

2158057 is a wasteful number, since it uses less digits than its factorization.

2158057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196198.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 2158057 is about 1469.0326749259. The cubic root of 2158057 is about 129.2273098982.

The spelling of 2158057 in words is "two million, one hundred fifty-eight thousand, fifty-seven".