55563351097 has 2 divisors, whose sum is σ = 55563351098. Its totient is φ = 55563351096.

The previous prime is 55563351047. The next prime is 55563351127. The reversal of 55563351097 is 79015336555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46040714041 + 9522637056 = 214571^2 + 97584^2 .

It is a cyclic number.

It is not a de Polignac number, because 55563351097 - 2¹⁵ = 55563318329 is a prime.

It is a super-2 number, since 2×55563351097² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55563351097.

It is not a weakly prime, because it can be changed into another prime (55563351047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27781675548 + 27781675549.

It is an arithmetic number, because the mean of its divisors is an integer number (27781675549).

Almost surely, 2^55563351097 is an apocalyptic number.

It is an amenable number.

55563351097 is a deficient number, since it is larger than the sum of its proper divisors (1).

55563351097 is an equidigital number, since it uses as much as digits as its factorization.

55563351097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2126250, while the sum is 49.

The spelling of 55563351097 in words is "fifty-five billion, five hundred sixty-three million, three hundred fifty-one thousand, ninety-seven".