71230057 has 4 divisors (see below), whose sum is σ = 74327040. Its totient is φ = 68133076.

The previous prime is 71230043. The next prime is 71230063. The reversal of 71230057 is 75003217.

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.

It is a cyclic number.

It is not a de Polignac number, because 71230057 - 2¹¹ = 71228009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71230087) 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, 1548457 + ... + 1548502.

It is an arithmetic number, because the mean of its divisors is an integer number (18581760).

Almost surely, 2^71230057 is an apocalyptic number.

It is an amenable number.

71230057 is a deficient number, since it is larger than the sum of its proper divisors (3096983).

71230057 is a wasteful number, since it uses less digits than its factorization.

71230057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096982.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 71230057 is about 8439.7901040251. The cubic root of 71230057 is about 414.5285341193.

The spelling of 71230057 in words is "seventy-one million, two hundred thirty thousand, fifty-seven".