509152745 has 8 divisors (see below), whose sum is σ = 627496584. Its totient is φ = 396313344.

The previous prime is 509152741. The next prime is 509152757. The reversal of 509152745 is 547251905.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17732521 + 491420224 = 4211^2 + 22168^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 509152745 - 2² = 509152741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 509152699 and 509152708.

It is not an unprimeable number, because it can be changed into a prime (509152741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1375904 + ... + 1376273.

It is an arithmetic number, because the mean of its divisors is an integer number (78437073).

Almost surely, 2^509152745 is an apocalyptic number.

It is an amenable number.

509152745 is a deficient number, since it is larger than the sum of its proper divisors (118343839).

509152745 is a wasteful number, since it uses less digits than its factorization.

509152745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752219.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 509152745 is about 22564.4132429806. The cubic root of 509152745 is about 798.5142972547.

The spelling of 509152745 in words is "five hundred nine million, one hundred fifty-two thousand, seven hundred forty-five".