505431545 has 8 divisors (see below), whose sum is σ = 607927680. Its totient is φ = 403405360.

The previous prime is 505431527. The next prime is 505431551. The reversal of 505431545 is 545134505.

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

It is not a de Polignac number, because 505431545 - 2⁶ = 505431481 is a prime.

It is a super-2 number, since 2×505431545² = 510922093362174050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115115 + ... + 119424.

It is an arithmetic number, because the mean of its divisors is an integer number (75990960).

Almost surely, 2^505431545 is an apocalyptic number.

It is an amenable number.

505431545 is a deficient number, since it is larger than the sum of its proper divisors (102496135).

505431545 is a wasteful number, since it uses less digits than its factorization.

505431545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234975.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 505431545 is about 22481.8047540672. The cubic root of 505431545 is about 796.5641948657.

The spelling of 505431545 in words is "five hundred five million, four hundred thirty-one thousand, five hundred forty-five".