505561416 has 16 divisors (see below), whose sum is σ = 1263903600. Its totient is φ = 168520464.

The previous prime is 505561409. The next prime is 505561429. The reversal of 505561416 is 614165505.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10532506 + ... + 10532553.

It is an arithmetic number, because the mean of its divisors is an integer number (78993975).

Almost surely, 2^505561416 is an apocalyptic number.

It is an amenable number.

505561416 is an abundant number, since it is smaller than the sum of its proper divisors (758342184).

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

505561416 is a wasteful number, since it uses less digits than its factorization.

505561416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21065068 (or 21065064 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 505561416 is about 22484.6929265223. The cubic root of 505561416 is about 796.6324149378.

The spelling of 505561416 in words is "five hundred five million, five hundred sixty-one thousand, four hundred sixteen".