55552923961 has 2 divisors, whose sum is σ = 55552923962. Its totient is φ = 55552923960.

The previous prime is 55552923947. The next prime is 55552924013. The reversal of 55552923961 is 16932925555.

It is an a-pointer prime, because the next prime (55552924013) can be obtained adding 55552923961 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31699665936 + 23853258025 = 178044^2 + 154445^2 .

It is a cyclic number.

It is not a de Polignac number, because 55552923961 - 2¹⁹ = 55552399673 is a prime.

It is a super-2 number, since 2×55552923961² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55552923899 and 55552923908.

It is not a weakly prime, because it can be changed into another prime (55552927961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27776461980 + 27776461981.

It is an arithmetic number, because the mean of its divisors is an integer number (27776461981).

Almost surely, 2^55552923961 is an apocalyptic number.

It is an amenable number.

55552923961 is a deficient number, since it is larger than the sum of its proper divisors (1).

55552923961 is an equidigital number, since it uses as much as digits as its factorization.

55552923961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3645000, while the sum is 52.

The spelling of 55552923961 in words is "fifty-five billion, five hundred fifty-two million, nine hundred twenty-three thousand, nine hundred sixty-one".