52257071 has 4 divisors (see below), whose sum is σ = 52668672. Its totient is φ = 51845472.

The previous prime is 52257059. The next prime is 52257077. The reversal of 52257071 is 17075225.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52257071 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 (52257077) 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, 205610 + ... + 205863.

It is an arithmetic number, because the mean of its divisors is an integer number (13167168).

Almost surely, 2^52257071 is an apocalyptic number.

52257071 is a deficient number, since it is larger than the sum of its proper divisors (411601).

52257071 is a wasteful number, since it uses less digits than its factorization.

52257071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411600.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 52257071 is about 7228.9052421511. The cubic root of 52257071 is about 373.8651820401.

The spelling of 52257071 in words is "fifty-two million, two hundred fifty-seven thousand, seventy-one".