516242957 has 4 divisors (see below), whose sum is σ = 516433500. Its totient is φ = 516052416.

The previous prime is 516242929. The next prime is 516243001. The reversal of 516242957 is 759242615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 118679236 + 397563721 = 10894^2 + 19939^2 .

It is a cyclic number.

It is not a de Polignac number, because 516242957 - 2²⁶ = 449134093 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 (516242557) 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, 91148 + ... + 96645.

It is an arithmetic number, because the mean of its divisors is an integer number (129108375).

Almost surely, 2^516242957 is an apocalyptic number.

It is an amenable number.

516242957 is a deficient number, since it is larger than the sum of its proper divisors (190543).

516242957 is a wasteful number, since it uses less digits than its factorization.

516242957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190542.

The product of its digits is 151200, while the sum is 41.

The square root of 516242957 is about 22720.9805466225. The cubic root of 516242957 is about 802.2037969616.

The spelling of 516242957 in words is "five hundred sixteen million, two hundred forty-two thousand, nine hundred fifty-seven".