71415945 has 16 divisors (see below), whose sum is σ = 126961920. Its totient is φ = 38088432.

The previous prime is 71415923. The next prime is 71416001. The reversal of 71415945 is 54951417.

It is not a de Polignac number, because 71415945 - 2⁶ = 71415881 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264369 + ... + 264638.

It is an arithmetic number, because the mean of its divisors is an integer number (7935120).

Almost surely, 2^71415945 is an apocalyptic number.

It is an amenable number.

71415945 is a deficient number, since it is larger than the sum of its proper divisors (55545975).

71415945 is a wasteful number, since it uses less digits than its factorization.

71415945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529021 (or 529015 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 71415945 is about 8450.7955246829. The cubic root of 71415945 is about 414.8888171697. Note that the first 4 decimals are identical.

The spelling of 71415945 in words is "seventy-one million, four hundred fifteen thousand, nine hundred forty-five".