55166246957 has 2 divisors, whose sum is σ = 55166246958. Its totient is φ = 55166246956.

The previous prime is 55166246951. The next prime is 55166246969. The reversal of 55166246957 is 75964266155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42265603396 + 12900643561 = 205586^2 + 113581^2 .

It is a cyclic number.

It is not a de Polignac number, because 55166246957 - 2⁶ = 55166246893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55166246951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27583123478 + 27583123479.

It is an arithmetic number, because the mean of its divisors is an integer number (27583123479).

Almost surely, 2^55166246957 is an apocalyptic number.

It is an amenable number.

55166246957 is a deficient number, since it is larger than the sum of its proper divisors (1).

55166246957 is an equidigital number, since it uses as much as digits as its factorization.

55166246957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608000, while the sum is 56.

The spelling of 55166246957 in words is "fifty-five billion, one hundred sixty-six million, two hundred forty-six thousand, nine hundred fifty-seven".