52516220402 has 16 divisors (see below), whose sum is σ = 78924744600. Its totient is φ = 26208012672.

The previous prime is 52516220329. The next prime is 52516220461. The reversal of 52516220402 is 20402261525.

It can be written as a sum of positive squares in 4 ways, for example, as 48250954921 + 4265265481 = 219661^2 + 65309^2 .

It is a super-2 number, since 2×52516220402² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3000974 + ... + 3018422.

Almost surely, 2^52516220402 is an apocalyptic number.

52516220402 is a deficient number, since it is larger than the sum of its proper divisors (26408524198).

52516220402 is a wasteful number, since it uses less digits than its factorization.

52516220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20237.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 52516220402 its reverse (20402261525), we get a palindrome (72918481927).

The spelling of 52516220402 in words is "fifty-two billion, five hundred sixteen million, two hundred twenty thousand, four hundred two".