71383357 has 4 divisors (see below), whose sum is σ = 75582396. Its totient is φ = 67184320.

The previous prime is 71383349. The next prime is 71383363. The reversal of 71383357 is 75338317.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51926436 + 19456921 = 7206^2 + 4411^2 .

It is a cyclic number.

It is not a de Polignac number, because 71383357 - 2³ = 71383349 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 (71383387) 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, 2099494 + ... + 2099527.

It is an arithmetic number, because the mean of its divisors is an integer number (18895599).

Almost surely, 2^71383357 is an apocalyptic number.

It is an amenable number.

71383357 is a deficient number, since it is larger than the sum of its proper divisors (4199039).

71383357 is a wasteful number, since it uses less digits than its factorization.

71383357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4199038.

The product of its digits is 52920, while the sum is 37.

The square root of 71383357 is about 8448.8672021757. The cubic root of 71383357 is about 414.8257012283.

The spelling of 71383357 in words is "seventy-one million, three hundred eighty-three thousand, three hundred fifty-seven".