505774854 has 144 divisors (see below), whose sum is σ = 1304769648. Its totient is φ = 145939968.

The previous prime is 505774847. The next prime is 505774861. The reversal of 505774854 is 458477505.

It is an interprime number because it is at equal distance from previous prime (505774847) and next prime (505774861).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1825764 + ... + 1826040.

Almost surely, 2^505774854 is an apocalyptic number.

505774854 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 505774854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652384824).

505774854 is an abundant number, since it is smaller than the sum of its proper divisors (798994794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505774854 is a wasteful number, since it uses less digits than its factorization.

505774854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 45.

The square root of 505774854 is about 22489.4387213198. The cubic root of 505774854 is about 796.7445066320.

The spelling of 505774854 in words is "five hundred five million, seven hundred seventy-four thousand, eight hundred fifty-four".