55444923461 has 2 divisors, whose sum is σ = 55444923462. Its totient is φ = 55444923460.

The previous prime is 55444923437. The next prime is 55444923463. The reversal of 55444923461 is 16432944455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48738951361 + 6705972100 = 220769^2 + 81890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55444923461 is a prime.

It is a super-2 number, since 2×55444923461² (a number of 22 digits) contains 22 as substring.

Together with 55444923463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55444923463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27722461730 + 27722461731.

It is an arithmetic number, because the mean of its divisors is an integer number (27722461731).

Almost surely, 2^55444923461 is an apocalyptic number.

It is an amenable number.

55444923461 is a deficient number, since it is larger than the sum of its proper divisors (1).

55444923461 is an equidigital number, since it uses as much as digits as its factorization.

55444923461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 47.

The spelling of 55444923461 in words is "fifty-five billion, four hundred forty-four million, nine hundred twenty-three thousand, four hundred sixty-one".