516440053 has 4 divisors (see below), whose sum is σ = 517455180. Its totient is φ = 515424928.

The previous prime is 516440047. The next prime is 516440063. The reversal of 516440053 is 350044615.

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 326055249 + 190384804 = 18057^2 + 13798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516440053 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 (516440063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506800 + ... + 507817.

It is an arithmetic number, because the mean of its divisors is an integer number (129363795).

Almost surely, 2^516440053 is an apocalyptic number.

It is an amenable number.

516440053 is a deficient number, since it is larger than the sum of its proper divisors (1015127).

516440053 is a wasteful number, since it uses less digits than its factorization.

516440053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015126.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 516440053 is about 22725.3174455276. The cubic root of 516440053 is about 802.3058748947.

Adding to 516440053 its reverse (350044615), we get a palindrome (866484668).

The spelling of 516440053 in words is "five hundred sixteen million, four hundred forty thousand, fifty-three".