523396961 has 4 divisors (see below), whose sum is σ = 524527872. Its totient is φ = 522266052.

The previous prime is 523396943. The next prime is 523396981. The reversal of 523396961 is 169693325.

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 523396961 - 2¹⁰ = 523395937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523396981) 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, 564761 + ... + 565686.

It is an arithmetic number, because the mean of its divisors is an integer number (131131968).

Almost surely, 2^523396961 is an apocalyptic number.

It is an amenable number.

523396961 is a deficient number, since it is larger than the sum of its proper divisors (1130911).

523396961 is a wasteful number, since it uses less digits than its factorization.

523396961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130910.

The product of its digits is 262440, while the sum is 44.

The square root of 523396961 is about 22877.8705521296. The cubic root of 523396961 is about 805.8924100119.

The spelling of 523396961 in words is "five hundred twenty-three million, three hundred ninety-six thousand, nine hundred sixty-one".