505432561 has 8 divisors (see below), whose sum is σ = 524004480. Its totient is φ = 486936912.

The previous prime is 505432549. The next prime is 505432573. The reversal of 505432561 is 165234505.

It is an interprime number because it is at equal distance from previous prime (505432549) and next prime (505432573).

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

It is not a de Polignac number, because 505432561 - 2²¹ = 503335409 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (505432261) 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, 5395 + ... + 32248.

It is an arithmetic number, because the mean of its divisors is an integer number (65500560).

Almost surely, 2^505432561 is an apocalyptic number.

It is an amenable number.

505432561 is a deficient number, since it is larger than the sum of its proper divisors (18571919).

505432561 is a wasteful number, since it uses less digits than its factorization.

505432561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38135.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 505432561 is about 22481.8273501066. The cubic root of 505432561 is about 796.5647286068.

The spelling of 505432561 in words is "five hundred five million, four hundred thirty-two thousand, five hundred sixty-one".