515222256053 has 4 divisors (see below), whose sum is σ = 515226194988. Its totient is φ = 515218317120.

The previous prime is 515222256047. The next prime is 515222256089. The reversal of 515222256053 is 350652222515.

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 311371812049 + 203850444004 = 558007^2 + 451498^2 .

It is a cyclic number.

It is not a de Polignac number, because 515222256053 - 2¹⁶ = 515222190517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 515222255998 and 515222256016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515222256253) 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, 1766276 + ... + 2037197.

It is an arithmetic number, because the mean of its divisors is an integer number (128806548747).

Almost surely, 2^515222256053 is an apocalyptic number.

It is an amenable number.

515222256053 is a deficient number, since it is larger than the sum of its proper divisors (3938935).

515222256053 is a wasteful number, since it uses less digits than its factorization.

515222256053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938934.

The product of its (nonzero) digits is 180000, while the sum is 38.

Adding to 515222256053 its reverse (350652222515), we get a palindrome (865874478568).

The spelling of 515222256053 in words is "five hundred fifteen billion, two hundred twenty-two million, two hundred fifty-six thousand, fifty-three".