509054747 has 4 divisors (see below), whose sum is σ = 513812376. Its totient is φ = 504297120.

The previous prime is 509054731. The next prime is 509054753. The reversal of 509054747 is 747450905.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 747450905 = 5 ⋅149490181.

It is a cyclic number.

It is not a de Polignac number, because 509054747 - 2⁴ = 509054731 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509054797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2378654 + ... + 2378867.

It is an arithmetic number, because the mean of its divisors is an integer number (128453094).

Almost surely, 2^509054747 is an apocalyptic number.

509054747 is a deficient number, since it is larger than the sum of its proper divisors (4757629).

509054747 is a wasteful number, since it uses less digits than its factorization.

509054747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4757628.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 509054747 is about 22562.2416217893. The cubic root of 509054747 is about 798.4630632351.

The spelling of 509054747 in words is "five hundred nine million, fifty-four thousand, seven hundred forty-seven".