71205433 has 4 divisors (see below), whose sum is σ = 76682788. Its totient is φ = 65728080.

The previous prime is 71205371. The next prime is 71205457. The reversal of 71205433 is 33450217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33450217 = 401 ⋅83417.

It can be written as a sum of positive squares in 2 ways, for example, as 5076009 + 66129424 = 2253^2 + 8132^2 .

It is a cyclic number.

It is not a de Polignac number, because 71205433 - 2⁹ = 71204921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71205398 and 71205407.

It is not an unprimeable number, because it can be changed into a prime (71205833) 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, 2738658 + ... + 2738683.

It is an arithmetic number, because the mean of its divisors is an integer number (19170697).

Almost surely, 2^71205433 is an apocalyptic number.

It is an amenable number.

71205433 is a deficient number, since it is larger than the sum of its proper divisors (5477355).

71205433 is a wasteful number, since it uses less digits than its factorization.

71205433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5477354.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 71205433 is about 8438.3311738756. The cubic root of 71205433 is about 414.4807615567.

The spelling of 71205433 in words is "seventy-one million, two hundred five thousand, four hundred thirty-three".