526601993 has 4 divisors (see below), whose sum is σ = 527311488. Its totient is φ = 525892500.

The previous prime is 526601987. The next prime is 526602001. The reversal of 526601993 is 399106625.

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 526601993 - 2²⁰ = 525553417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 526601993.

It is not an unprimeable number, because it can be changed into a prime (526601903) 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, 353633 + ... + 355118.

It is an arithmetic number, because the mean of its divisors is an integer number (131827872).

Almost surely, 2^526601993 is an apocalyptic number.

It is an amenable number.

526601993 is a deficient number, since it is larger than the sum of its proper divisors (709495).

526601993 is an equidigital number, since it uses as much as digits as its factorization.

526601993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709494.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 526601993 is about 22947.8102005398. The cubic root of 526601993 is about 807.5340299474.

The spelling of 526601993 in words is "five hundred twenty-six million, six hundred one thousand, nine hundred ninety-three".