515396494 has 4 divisors (see below), whose sum is σ = 773094744. Its totient is φ = 257698246.

The previous prime is 515396491. The next prime is 515396509. The reversal of 515396494 is 494693515.

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 (515396491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128849122 + ... + 128849125.

It is an arithmetic number, because the mean of its divisors is an integer number (193273686).

Almost surely, 2^515396494 is an apocalyptic number.

515396494 is a deficient number, since it is larger than the sum of its proper divisors (257698250).

515396494 is a wasteful number, since it uses less digits than its factorization.

515396494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257698249.

The product of its digits is 583200, while the sum is 46.

The square root of 515396494 is about 22702.3455616375. The cubic root of 515396494 is about 801.7651099111.

The spelling of 515396494 in words is "five hundred fifteen million, three hundred ninety-six thousand, four hundred ninety-four".