71983151 has 8 divisors (see below), whose sum is σ = 76315680. Its totient is φ = 67661568.

The previous prime is 71983139. The next prime is 71983181. The reversal of 71983151 is 15138917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71983151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71983181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13670 + ... + 18188.

It is an arithmetic number, because the mean of its divisors is an integer number (9539460).

Almost surely, 2^71983151 is an apocalyptic number.

71983151 is a deficient number, since it is larger than the sum of its proper divisors (4332529).

71983151 is a wasteful number, since it uses less digits than its factorization.

71983151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5473.

The product of its digits is 7560, while the sum is 35.

The square root of 71983151 is about 8484.2884793010. The cubic root of 71983151 is about 415.9843108451.

The spelling of 71983151 in words is "seventy-one million, nine hundred eighty-three thousand, one hundred fifty-one".