52223778306561 has 32 divisors (see below), whose sum is σ = 73565051535360. Its totient is φ = 32889432470400.

The previous prime is 52223778306551. The next prime is 52223778306571. The reversal of 52223778306561 is 16560387732225.

It is an interprime number because it is at equal distance from previous prime (52223778306551) and next prime (52223778306571).

It is not a de Polignac number, because 52223778306561 - 2¹³ = 52223778298369 is a prime.

It is a super-3 number, since 3×52223778306561³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (52223778306551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12422260 + ... + 16086021.

It is an arithmetic number, because the mean of its divisors is an integer number (2298907860480).

Almost surely, 2^{52223778306561} is an apocalyptic number.

It is an amenable number.

52223778306561 is a deficient number, since it is larger than the sum of its proper divisors (21341273228799).

52223778306561 is a wasteful number, since it uses less digits than its factorization.

52223778306561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28508637.

The product of its (nonzero) digits is 25401600, while the sum is 57.

The spelling of 52223778306561 in words is "fifty-two trillion, two hundred twenty-three billion, seven hundred seventy-eight million, three hundred six thousand, five hundred sixty-one".