505104553 has 4 divisors (see below), whose sum is σ = 505300180. Its totient is φ = 504908928.

The previous prime is 505104547. The next prime is 505104557. The reversal of 505104553 is 355401505.

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

It can be written as a sum of positive squares in 2 ways, for example, as 272481049 + 232623504 = 16507^2 + 15252^2 .

It is a cyclic number.

It is not a de Polignac number, because 505104553 - 2¹⁷ = 504973481 is a prime.

It is a super-2 number, since 2×505104553² = 510261218922659618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505104557) 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, 93888 + ... + 99121.

It is an arithmetic number, because the mean of its divisors is an integer number (126325045).

Almost surely, 2^505104553 is an apocalyptic number.

It is an amenable number.

505104553 is a deficient number, since it is larger than the sum of its proper divisors (195627).

505104553 is a wasteful number, since it uses less digits than its factorization.

505104553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195626.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 505104553 is about 22474.5312075692. The cubic root of 505104553 is about 796.3923771304.

The spelling of 505104553 in words is "five hundred five million, one hundred four thousand, five hundred fifty-three".