505451406 has 16 divisors (see below), whose sum is σ = 1011330000. Its totient is φ = 168412608.

The previous prime is 505451389. The next prime is 505451437. The reversal of 505451406 is 604154505.

It is a super-2 number, since 2×505451406² = 510962247654753672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231 + ... + 31818.

It is an arithmetic number, because the mean of its divisors is an integer number (63208125).

Almost surely, 2^505451406 is an apocalyptic number.

505451406 is an abundant number, since it is smaller than the sum of its proper divisors (505878594).

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

505451406 is a wasteful number, since it uses less digits than its factorization.

505451406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35603.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 505451406 is about 22482.2464624868. The cubic root of 505451406 is about 796.5746284279.

The spelling of 505451406 in words is "five hundred five million, four hundred fifty-one thousand, four hundred six".