7149157 has 4 divisors (see below), whose sum is σ = 7181440. Its totient is φ = 7116876.

The previous prime is 7149143. The next prime is 7149161. The reversal of 7149157 is 7519417.

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 7149157 - 2¹¹ = 7147109 is a prime.

It is a super-2 number, since 2×7149157² = 102220891621298, which contains 22 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 (7149257) 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, 15807 + ... + 16252.

It is an arithmetic number, because the mean of its divisors is an integer number (1795360).

Almost surely, 2^7149157 is an apocalyptic number.

It is an amenable number.

7149157 is a deficient number, since it is larger than the sum of its proper divisors (32283).

7149157 is a wasteful number, since it uses less digits than its factorization.

7149157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32282.

The product of its digits is 8820, while the sum is 34.

The square root of 7149157 is about 2673.7907547151. The cubic root of 7149157 is about 192.6422808236.

The spelling of 7149157 in words is "seven million, one hundred forty-nine thousand, one hundred fifty-seven".