55858097657 has 2 divisors, whose sum is σ = 55858097658. Its totient is φ = 55858097656.

The previous prime is 55858097639. The next prime is 55858097681. The reversal of 55858097657 is 75679085855.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42069701881 + 13788395776 = 205109^2 + 117424^2 .

It is a cyclic number.

It is not a de Polignac number, because 55858097657 - 2⁶ = 55858097593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55858097593 and 55858097602.

It is not a weakly prime, because it can be changed into another prime (55858097357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27929048828 + 27929048829.

It is an arithmetic number, because the mean of its divisors is an integer number (27929048829).

Almost surely, 2^55858097657 is an apocalyptic number.

It is an amenable number.

55858097657 is a deficient number, since it is larger than the sum of its proper divisors (1).

55858097657 is an equidigital number, since it uses as much as digits as its factorization.

55858097657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840000, while the sum is 65.

The spelling of 55858097657 in words is "fifty-five billion, eight hundred fifty-eight million, ninety-seven thousand, six hundred fifty-seven".