505085554 has 4 divisors (see below), whose sum is σ = 757628334. Its totient is φ = 252542776.

The previous prime is 505085549. The next prime is 505085561. The reversal of 505085554 is 455580505.

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

It can be written as a sum of positive squares in only one way, i.e., 291487329 + 213598225 = 17073^2 + 14615^2 .

It is a super-2 number, since 2×505085554² = 510222833718973832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126271387 + ... + 126271390.

Almost surely, 2^505085554 is an apocalyptic number.

505085554 is a deficient number, since it is larger than the sum of its proper divisors (252542780).

505085554 is a wasteful number, since it uses less digits than its factorization.

505085554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252542779.

The product of its (nonzero) digits is 100000, while the sum is 37.

The square root of 505085554 is about 22474.1085251451. The cubic root of 505085554 is about 796.3823918390.

The spelling of 505085554 in words is "five hundred five million, eighty-five thousand, five hundred fifty-four".