55461321361 has 4 divisors (see below), whose sum is σ = 55462350132. Its totient is φ = 55460292592.

The previous prime is 55461321359. The next prime is 55461321379. The reversal of 55461321361 is 16312316455.

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 32876942400 + 22584378961 = 181320^2 + 150281^2 .

It is a cyclic number.

It is not a de Polignac number, because 55461321361 - 2¹ = 55461321359 is a prime.

It is a super-2 number, since 2×55461321361² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55461321361.

It is not an unprimeable number, because it can be changed into a prime (55461321301) 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, 428770 + ... + 542923.

It is an arithmetic number, because the mean of its divisors is an integer number (13865587533).

Almost surely, 2^55461321361 is an apocalyptic number.

It is an amenable number.

55461321361 is a deficient number, since it is larger than the sum of its proper divisors (1028771).

55461321361 is an equidigital number, since it uses as much as digits as its factorization.

55461321361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028770.

The product of its digits is 64800, while the sum is 37.

The spelling of 55461321361 in words is "fifty-five billion, four hundred sixty-one million, three hundred twenty-one thousand, three hundred sixty-one".