52861626401 has 4 divisors (see below), whose sum is σ = 54150934404. Its totient is φ = 51572318400.

The previous prime is 52861626353. The next prime is 52861626403. The reversal of 52861626401 is 10462616825.

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 29145318400 + 23716308001 = 170720^2 + 154001^2 .

It is a cyclic number.

It is not a de Polignac number, because 52861626401 - 2²² = 52857432097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 1289307961 = 52861626401 / (5 + 2 + 8 + 6 + 1 + 6 + 2 + 6 + 4 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52861626403) 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, 644653940 + ... + 644654021.

It is an arithmetic number, because the mean of its divisors is an integer number (13537733601).

Almost surely, 2^52861626401 is an apocalyptic number.

It is an amenable number.

52861626401 is a deficient number, since it is larger than the sum of its proper divisors (1289308003).

52861626401 is a wasteful number, since it uses less digits than its factorization.

52861626401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289308002.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 52861626401 in words is "fifty-two billion, eight hundred sixty-one million, six hundred twenty-six thousand, four hundred one".