55100897 has 2 divisors, whose sum is σ = 55100898. Its totient is φ = 55100896.

The previous prime is 55100891. The next prime is 55100923. The reversal of 55100897 is 79800155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39450961 + 15649936 = 6281^2 + 3956^2 .

It is a cyclic number.

It is not a de Polignac number, because 55100897 - 2¹² = 55096801 is a prime.

It is a super-2 number, since 2×55100897² = 6072217700409218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55100891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27550448 + 27550449.

It is an arithmetic number, because the mean of its divisors is an integer number (27550449).

Almost surely, 2^55100897 is an apocalyptic number.

It is an amenable number.

55100897 is a deficient number, since it is larger than the sum of its proper divisors (1).

55100897 is an equidigital number, since it uses as much as digits as its factorization.

55100897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 55100897 is about 7422.9978445369. The cubic root of 55100897 is about 380.5276534082.

The spelling of 55100897 in words is "fifty-five million, one hundred thousand, eight hundred ninety-seven".