515051424247 has 4 divisors (see below), whose sum is σ = 516486108240. Its totient is φ = 513616740256.

The previous prime is 515051424241. The next prime is 515051424271. The reversal of 515051424247 is 742424150515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742424150515 = 5 ⋅148484830103.

It is a cyclic number.

It is not a de Polignac number, because 515051424247 - 2²⁷ = 514917206519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515051424241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717341458 + ... + 717342175.

It is an arithmetic number, because the mean of its divisors is an integer number (129121527060).

Almost surely, 2^515051424247 is an apocalyptic number.

515051424247 is a deficient number, since it is larger than the sum of its proper divisors (1434683993).

515051424247 is a wasteful number, since it uses less digits than its factorization.

515051424247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434683992.

The product of its (nonzero) digits is 224000, while the sum is 40.

The spelling of 515051424247 in words is "five hundred fifteen billion, fifty-one million, four hundred twenty-four thousand, two hundred forty-seven".