55450517 has 2 divisors, whose sum is σ = 55450518. Its totient is φ = 55450516.

The previous prime is 55450469. The next prime is 55450519. The reversal of 55450517 is 71505455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32160241 + 23290276 = 5671^2 + 4826^2 .

It is a cyclic number.

It is not a de Polignac number, because 55450517 - 2¹⁴ = 55434133 is a prime.

Together with 55450519, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55450519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27725258 + 27725259.

It is an arithmetic number, because the mean of its divisors is an integer number (27725259).

Almost surely, 2^55450517 is an apocalyptic number.

It is an amenable number.

55450517 is a deficient number, since it is larger than the sum of its proper divisors (1).

55450517 is an equidigital number, since it uses as much as digits as its factorization.

55450517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 55450517 is about 7446.5103907804. The cubic root of 55450517 is about 381.3307842070.

The spelling of 55450517 in words is "fifty-five million, four hundred fifty thousand, five hundred seventeen".