71149275 has 18 divisors (see below), whose sum is σ = 127436660. Its totient is φ = 37946160.

The previous prime is 71149271. The next prime is 71149277. The reversal of 71149275 is 57294117.

It is a happy number.

It is not a de Polignac number, because 71149275 - 2² = 71149271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71149271) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 157885 + ... + 158334.

Almost surely, 2^71149275 is an apocalyptic number.

71149275 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

71149275 is a deficient number, since it is larger than the sum of its proper divisors (56287385).

71149275 is a wasteful number, since it uses less digits than its factorization.

71149275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316235 (or 316227 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 71149275 is about 8435.0029638406. The cubic root of 71149275 is about 414.3717692534.

The spelling of 71149275 in words is "seventy-one million, one hundred forty-nine thousand, two hundred seventy-five".