83520471 has 8 divisors (see below), whose sum is σ = 111682944. Its totient is φ = 55519160.

The previous prime is 83520461. The next prime is 83520517. The reversal of 83520471 is 17402538.

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

It is a cyclic number.

It is not a de Polignac number, because 83520471 - 2¹⁸ = 83258327 is a prime.

It is a super-3 number, since 3×83520471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83520401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39075 + ... + 41156.

It is an arithmetic number, because the mean of its divisors is an integer number (13960368).

Almost surely, 2^83520471 is an apocalyptic number.

83520471 is a deficient number, since it is larger than the sum of its proper divisors (28162473).

83520471 is a wasteful number, since it uses less digits than its factorization.

83520471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80581.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 83520471 is about 9138.9534958878. The cubic root of 83520471 is about 437.1169475468.

The spelling of 83520471 in words is "eighty-three million, five hundred twenty thousand, four hundred seventy-one".