2170003157 has 4 divisors (see below), whose sum is σ = 2480003616. Its totient is φ = 1860002700.

The previous prime is 2170003151. The next prime is 2170003163. The reversal of 2170003157 is 7513000712.

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 an interprime number because it is at equal distance from previous prime (2170003151) and next prime (2170003163).

It is a cyclic number.

It is not a de Polignac number, because 2170003157 - 2⁶ = 2170003093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170003151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155000219 + ... + 155000232.

It is an arithmetic number, because the mean of its divisors is an integer number (620000904).

Almost surely, 2^2170003157 is an apocalyptic number.

It is an amenable number.

2170003157 is a deficient number, since it is larger than the sum of its proper divisors (310000459).

2170003157 is an equidigital number, since it uses as much as digits as its factorization.

2170003157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310000458.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 2170003157 is about 46583.2926809602. The cubic root of 2170003157 is about 1294.6532182170.

Adding to 2170003157 its reverse (7513000712), we get a palindrome (9683003869).

The spelling of 2170003157 in words is "two billion, one hundred seventy million, three thousand, one hundred fifty-seven".