55794508621 has 2 divisors, whose sum is σ = 55794508622. Its totient is φ = 55794508620.

The previous prime is 55794508519. The next prime is 55794508631. The reversal of 55794508621 is 12680549755.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55625222500 + 169286121 = 235850^2 + 13011^2 .

It is a cyclic number.

It is not a de Polignac number, because 55794508621 - 2²⁵ = 55760954189 is a prime.

It is a super-2 number, since 2×55794508621² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55794508631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27897254310 + 27897254311.

It is an arithmetic number, because the mean of its divisors is an integer number (27897254311).

Almost surely, 2^55794508621 is an apocalyptic number.

It is an amenable number.

55794508621 is a deficient number, since it is larger than the sum of its proper divisors (1).

55794508621 is an equidigital number, since it uses as much as digits as its factorization.

55794508621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024000, while the sum is 52.

The spelling of 55794508621 in words is "fifty-five billion, seven hundred ninety-four million, five hundred eight thousand, six hundred twenty-one".