2020157 has 4 divisors (see below), whose sum is σ = 2029440. Its totient is φ = 2010876.

The previous prime is 2020153. The next prime is 2020171. The reversal of 2020157 is 7510202.

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 2020157 - 2² = 2020153 is a prime.

It is a super-3 number, since 3×2020157³ = 24732990053330429679, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020153) 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, 4307 + ... + 4752.

It is an arithmetic number, because the mean of its divisors is an integer number (507360).

2^2020157 is an apocalyptic number.

It is an amenable number.

2020157 is a deficient number, since it is larger than the sum of its proper divisors (9283).

2020157 is an equidigital number, since it uses as much as digits as its factorization.

2020157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9282.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 2020157 is about 1421.3222716893. The cubic root of 2020157 is about 126.4139613978.

Adding to 2020157 its reverse (7510202), we get a palindrome (9530359).

The spelling of 2020157 in words is "two million, twenty thousand, one hundred fifty-seven".