71475133 has 4 divisors (see below), whose sum is σ = 71493760. Its totient is φ = 71456508.

The previous prime is 71475059. The next prime is 71475139. The reversal of 71475133 is 33157417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33157417 = 149 ⋅222533.

It is a cyclic number.

It is not a de Polignac number, because 71475133 - 2²¹ = 69377981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71475095 and 71475104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71475139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203 + ... + 12016.

It is an arithmetic number, because the mean of its divisors is an integer number (17873440).

Almost surely, 2^71475133 is an apocalyptic number.

It is an amenable number.

71475133 is a deficient number, since it is larger than the sum of its proper divisors (18627).

71475133 is a wasteful number, since it uses less digits than its factorization.

71475133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18626.

The product of its digits is 8820, while the sum is 31.

The square root of 71475133 is about 8454.2967182374. The cubic root of 71475133 is about 415.0034024979.

The spelling of 71475133 in words is "seventy-one million, four hundred seventy-five thousand, one hundred thirty-three".