2072157 has 4 divisors (see below), whose sum is σ = 2762880. Its totient is φ = 1381436.

The previous prime is 2072153. The next prime is 2072179. The reversal of 2072157 is 7512702.

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 2072157 - 2² = 2072153 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2072153) 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, 345357 + ... + 345362.

It is an arithmetic number, because the mean of its divisors is an integer number (690720).

2^2072157 is an apocalyptic number.

It is an amenable number.

2072157 is a deficient number, since it is larger than the sum of its proper divisors (690723).

2072157 is an equidigital number, since it uses as much as digits as its factorization.

2072157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690722.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 2072157 is about 1439.4988711354. The cubic root of 2072157 is about 127.4894416478.

Adding to 2072157 its reverse (7512702), we get a palindrome (9584859).

The spelling of 2072157 in words is "two million, seventy-two thousand, one hundred fifty-seven".