523065421 has 8 divisors (see below), whose sum is σ = 550808000. Its totient is φ = 495344160.

The previous prime is 523065391. The next prime is 523065437. The reversal of 523065421 is 124560325.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 523065421 - 2⁷ = 523065293 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 523065421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523065461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81280 + ... + 87478.

It is an arithmetic number, because the mean of its divisors is an integer number (68851000).

Almost surely, 2^523065421 is an apocalyptic number.

It is an amenable number.

523065421 is a deficient number, since it is larger than the sum of its proper divisors (27742579).

523065421 is a wasteful number, since it uses less digits than its factorization.

523065421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10659.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 523065421 is about 22870.6235376301. The cubic root of 523065421 is about 805.7222128673.

The spelling of 523065421 in words is "five hundred twenty-three million, sixty-five thousand, four hundred twenty-one".