509468566 has 4 divisors (see below), whose sum is σ = 764202852. Its totient is φ = 254734282.

The previous prime is 509468537. The next prime is 509468567. The reversal of 509468566 is 665864905.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509468567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127367140 + ... + 127367143.

It is an arithmetic number, because the mean of its divisors is an integer number (191050713).

Almost surely, 2^509468566 is an apocalyptic number.

509468566 is a deficient number, since it is larger than the sum of its proper divisors (254734286).

509468566 is a wasteful number, since it uses less digits than its factorization.

509468566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254734285.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The square root of 509468566 is about 22571.4103679854. The cubic root of 509468566 is about 798.6793658983.

The spelling of 509468566 in words is "five hundred nine million, four hundred sixty-eight thousand, five hundred sixty-six".