71149895 has 4 divisors (see below), whose sum is σ = 85379880. Its totient is φ = 56919912.

The previous prime is 71149877. The next prime is 71149901. The reversal of 71149895 is 59894117.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71149895 - 2¹⁶ = 71084359 is a prime.

It is a super-2 number, since 2×71149895² = 10124615117022050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7114985 + ... + 7114994.

It is an arithmetic number, because the mean of its divisors is an integer number (21344970).

Almost surely, 2^71149895 is an apocalyptic number.

71149895 is a deficient number, since it is larger than the sum of its proper divisors (14229985).

71149895 is a wasteful number, since it uses less digits than its factorization.

71149895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14229984.

The product of its digits is 90720, while the sum is 44.

The square root of 71149895 is about 8435.0397153778. The cubic root of 71149895 is about 414.3729728719.

The spelling of 71149895 in words is "seventy-one million, one hundred forty-nine thousand, eight hundred ninety-five".