506558798 has 4 divisors (see below), whose sum is σ = 759838200. Its totient is φ = 253279398.

The previous prime is 506558797. The next prime is 506558807. The reversal of 506558798 is 897855605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 897855605 = 5 ⋅179571121.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506558797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126639698 + ... + 126639701.

It is an arithmetic number, because the mean of its divisors is an integer number (189959550).

Almost surely, 2^506558798 is an apocalyptic number.

506558798 is a deficient number, since it is larger than the sum of its proper divisors (253279402).

506558798 is a wasteful number, since it uses less digits than its factorization.

506558798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253279401.

The product of its (nonzero) digits is 3024000, while the sum is 53.

The square root of 506558798 is about 22506.8611316638. The cubic root of 506558798 is about 797.1559417726.

The spelling of 506558798 in words is "five hundred six million, five hundred fifty-eight thousand, seven hundred ninety-eight".