505012158 has 80 divisors (see below), whose sum is σ = 1297321344. Its totient is φ = 143836560.

The previous prime is 505012147. The next prime is 505012171. The reversal of 505012158 is 851210505.

505012158 is a `hidden beast` number, since 5 + 0 + 501 + 2 + 158 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 556341 + ... + 557247.

Almost surely, 2^505012158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505012158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648660672).

505012158 is an abundant number, since it is smaller than the sum of its proper divisors (792309186).

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

505012158 is a wasteful number, since it uses less digits than its factorization.

505012158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419 (or 1410 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 505012158 is about 22472.4755645656. The cubic root of 505012158 is about 796.3438148012.

The spelling of 505012158 in words is "five hundred five million, twelve thousand, one hundred fifty-eight".