515023430 has 8 divisors (see below), whose sum is σ = 927042192. Its totient is φ = 206009368.

The previous prime is 515023423. The next prime is 515023463. The reversal of 515023430 is 34320515.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 515023396 and 515023405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25751162 + ... + 25751181.

It is an arithmetic number, because the mean of its divisors is an integer number (115880274).

Almost surely, 2^515023430 is an apocalyptic number.

515023430 is a deficient number, since it is larger than the sum of its proper divisors (412018762).

515023430 is a wasteful number, since it uses less digits than its factorization.

515023430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51502350.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 515023430 is about 22694.1276545277. The cubic root of 515023430 is about 801.5716136414.

Adding to 515023430 its reverse (34320515), we get a palindrome (549343945).

The spelling of 515023430 in words is "five hundred fifteen million, twenty-three thousand, four hundred thirty".