505455523 has 4 divisors (see below), whose sum is σ = 505957480. Its totient is φ = 504953568.

The previous prime is 505455493. The next prime is 505455539. The reversal of 505455523 is 325554505.

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

It is a cyclic number.

It is not a de Polignac number, because 505455523 - 2⁵ = 505455491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505455553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249465 + ... + 251482.

It is an arithmetic number, because the mean of its divisors is an integer number (126489370).

Almost surely, 2^505455523 is an apocalyptic number.

505455523 is a deficient number, since it is larger than the sum of its proper divisors (501957).

505455523 is a wasteful number, since it uses less digits than its factorization.

505455523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501956.

The product of its (nonzero) digits is 75000, while the sum is 34.

The square root of 505455523 is about 22482.3380234352. The cubic root of 505455523 is about 796.5767911737.

The spelling of 505455523 in words is "five hundred five million, four hundred fifty-five thousand, five hundred twenty-three".