523520455 has 4 divisors (see below), whose sum is σ = 628224552. Its totient is φ = 418816360.

The previous prime is 523520453. The next prime is 523520461. The reversal of 523520455 is 554025325.

It is a happy number.

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

It is not a de Polignac number, because 523520455 - 2¹ = 523520453 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523520453) 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, 52352041 + ... + 52352050.

It is an arithmetic number, because the mean of its divisors is an integer number (157056138).

Almost surely, 2^523520455 is an apocalyptic number.

523520455 is a deficient number, since it is larger than the sum of its proper divisors (104704097).

523520455 is a wasteful number, since it uses less digits than its factorization.

523520455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104704096.

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 523520455 is about 22880.5693766567. The cubic root of 523520455 is about 805.9557876891.

The spelling of 523520455 in words is "five hundred twenty-three million, five hundred twenty thousand, four hundred fifty-five".