528857813 has 4 divisors (see below), whose sum is σ = 576935808. Its totient is φ = 480779820.

The previous prime is 528857809. The next prime is 528857821. The reversal of 528857813 is 318758825.

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 528857813 - 2² = 528857809 is a prime.

It is a super-2 number, since 2×528857813² = 559381172742285938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528854813) 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, 24038981 + ... + 24039002.

It is an arithmetic number, because the mean of its divisors is an integer number (144233952).

Almost surely, 2^528857813 is an apocalyptic number.

It is an amenable number.

528857813 is a deficient number, since it is larger than the sum of its proper divisors (48077995).

528857813 is a wasteful number, since it uses less digits than its factorization.

528857813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48077994.

The product of its digits is 537600, while the sum is 47.

The square root of 528857813 is about 22996.9087705283. The cubic root of 528857813 is about 808.6854728834.

The spelling of 528857813 in words is "five hundred twenty-eight million, eight hundred fifty-seven thousand, eight hundred thirteen".