55013552197 has 2 divisors, whose sum is σ = 55013552198. Its totient is φ = 55013552196.

The previous prime is 55013552159. The next prime is 55013552257. The reversal of 55013552197 is 79125531055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53698329441 + 1315222756 = 231729^2 + 36266^2 .

It is a cyclic number.

It is not a de Polignac number, because 55013552197 - 2²³ = 55005163589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55013502197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27506776098 + 27506776099.

It is an arithmetic number, because the mean of its divisors is an integer number (27506776099).

Almost surely, 2^55013552197 is an apocalyptic number.

It is an amenable number.

55013552197 is a deficient number, since it is larger than the sum of its proper divisors (1).

55013552197 is an equidigital number, since it uses as much as digits as its factorization.

55013552197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236250, while the sum is 43.

The spelling of 55013552197 in words is "fifty-five billion, thirteen million, five hundred fifty-two thousand, one hundred ninety-seven".