71705151 has 24 divisors (see below), whose sum is σ = 118609920. Its totient is φ = 40891536.

The previous prime is 71705143. The next prime is 71705159. The reversal of 71705151 is 15150717.

It is an interprime number because it is at equal distance from previous prime (71705143) and next prime (71705159).

It is not a de Polignac number, because 71705151 - 2³ = 71705143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71705159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44506 + ... + 46088.

It is an arithmetic number, because the mean of its divisors is an integer number (4942080).

Almost surely, 2^71705151 is an apocalyptic number.

71705151 is a deficient number, since it is larger than the sum of its proper divisors (46904769).

71705151 is a wasteful number, since it uses less digits than its factorization.

71705151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315 (or 2312 counting only the distinct ones).

The product of its (nonzero) digits is 1225, while the sum is 27.

The square root of 71705151 is about 8467.8894064578. The cubic root of 71705151 is about 415.4481074441.

Adding to 71705151 its reverse (15150717), we get a palindrome (86855868).

It can be divided in two parts, 7170 and 5151, that added together give a palindrome (12321).

The spelling of 71705151 in words is "seventy-one million, seven hundred five thousand, one hundred fifty-one".