505954491 has 8 divisors (see below), whose sum is σ = 770978304. Its totient is φ = 289116840.

The previous prime is 505954489. The next prime is 505954511. The reversal of 505954491 is 194459505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505954491 - 2¹ = 505954489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505954481) by changing a digit.

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, 12046515 + ... + 12046556.

It is an arithmetic number, because the mean of its divisors is an integer number (96372288).

Almost surely, 2^505954491 is an apocalyptic number.

505954491 is a deficient number, since it is larger than the sum of its proper divisors (265023813).

505954491 is a wasteful number, since it uses less digits than its factorization.

505954491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24093081.

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 505954491 is about 22493.4321747483. The cubic root of 505954491 is about 796.8388225452.

The spelling of 505954491 in words is "five hundred five million, nine hundred fifty-four thousand, four hundred ninety-one".