78571471 has 12 divisors (see below), whose sum is σ = 87060736. Its totient is φ = 70852320.

The previous prime is 78571463. The next prime is 78571481. The reversal of 78571471 is 17417587.

It is not a de Polignac number, because 78571471 - 2³ = 78571463 is a prime.

It is a super-3 number, since 3×78571471³ (a number of 25 digits) contains 333 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 (78571481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12811 + ... + 17923.

Almost surely, 2^78571471 is an apocalyptic number.

78571471 is a deficient number, since it is larger than the sum of its proper divisors (8489265).

78571471 is a wasteful number, since it uses less digits than its factorization.

78571471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5262 (or 5251 counting only the distinct ones).

The product of its digits is 54880, while the sum is 40.

The square root of 78571471 is about 8864.0549975731. The cubic root of 78571471 is about 428.3067919312.

The spelling of 78571471 in words is "seventy-eight million, five hundred seventy-one thousand, four hundred seventy-one".