55598661515101 has 2 divisors, whose sum is σ = 55598661515102. Its totient is φ = 55598661515100.

The previous prime is 55598661515093. The next prime is 55598661515107. The reversal of 55598661515101 is 10151516689555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52647649456900 + 2951012058201 = 7255870^2 + 1717851^2 .

It is a cyclic number.

It is not a de Polignac number, because 55598661515101 - 2³ = 55598661515093 is a prime.

It is a super-2 number, since 2×55598661515101² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55598661515107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27799330757550 + 27799330757551.

It is an arithmetic number, because the mean of its divisors is an integer number (27799330757551).

Almost surely, 2^{55598661515101} is an apocalyptic number.

It is an amenable number.

55598661515101 is a deficient number, since it is larger than the sum of its proper divisors (1).

55598661515101 is an equidigital number, since it uses as much as digits as its factorization.

55598661515101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100000, while the sum is 58.

The spelling of 55598661515101 in words is "fifty-five trillion, five hundred ninety-eight billion, six hundred sixty-one million, five hundred fifteen thousand, one hundred one".