7147157 has 4 divisors (see below), whose sum is σ = 7567596. Its totient is φ = 6726720.

The previous prime is 7147139. The next prime is 7147169. The reversal of 7147157 is 7517417.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7517417 = 17 ⋅442201.

It can be written as a sum of positive squares in 2 ways, for example, as 5982916 + 1164241 = 2446^2 + 1079^2 .

It is a cyclic number.

It is not a de Polignac number, because 7147157 - 2⁶ = 7147093 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 (7147117) 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, 210194 + ... + 210227.

It is an arithmetic number, because the mean of its divisors is an integer number (1891899).

Almost surely, 2^7147157 is an apocalyptic number.

It is an amenable number.

7147157 is a deficient number, since it is larger than the sum of its proper divisors (420439).

7147157 is a wasteful number, since it uses less digits than its factorization.

7147157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420438.

The product of its digits is 6860, while the sum is 32.

The square root of 7147157 is about 2673.4167277101. The cubic root of 7147157 is about 192.6243150459.

It can be divided in two parts, 714715 and 7, that multiplied together give a palindrome (5003005).

The spelling of 7147157 in words is "seven million, one hundred forty-seven thousand, one hundred fifty-seven".