513240783 has 8 divisors (see below), whose sum is σ = 746532096. Its totient is φ = 311055000.

The previous prime is 513240757. The next prime is 513240821. The reversal of 513240783 is 387042315.

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

It is not a de Polignac number, because 513240783 - 2⁶ = 513240719 is a prime.

It is a super-2 number, since 2×513240783² = 526832202668906178, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 15552751 = 513240783 / (5 + 1 + 3 + 2 + 4 + 0 + 7 + 8 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513240383) 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, 7776343 + ... + 7776408.

It is an arithmetic number, because the mean of its divisors is an integer number (93316512).

Almost surely, 2^513240783 is an apocalyptic number.

513240783 is a deficient number, since it is larger than the sum of its proper divisors (233291313).

513240783 is a wasteful number, since it uses less digits than its factorization.

513240783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15552765.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 513240783 is about 22654.8180968199. The cubic root of 513240783 is about 800.6457198130.

The spelling of 513240783 in words is "five hundred thirteen million, two hundred forty thousand, seven hundred eighty-three".