4492157 has 2 divisors, whose sum is σ = 4492158. Its totient is φ = 4492156.

The previous prime is 4492123. The next prime is 4492171. The reversal of 4492157 is 7512944.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3818116 + 674041 = 1954^2 + 821^2 .

It is a cyclic number.

It is not a de Polignac number, because 4492157 - 2¹⁰ = 4491133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4492357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2246078 + 2246079.

It is an arithmetic number, because the mean of its divisors is an integer number (2246079).

Almost surely, 2^4492157 is an apocalyptic number.

It is an amenable number.

4492157 is a deficient number, since it is larger than the sum of its proper divisors (1).

4492157 is an equidigital number, since it uses as much as digits as its factorization.

4492157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 4492157 is about 2119.4709245470. The cubic root of 4492157 is about 165.0003917958. Note that the first 3 decimals are identical.

Subtracting from 4492157 its sum of digits (32), we obtain a cube (4492125 = 165³).

The spelling of 4492157 in words is "four million, four hundred ninety-two thousand, one hundred fifty-seven".