55758617 has 2 divisors, whose sum is σ = 55758618. Its totient is φ = 55758616.

The previous prime is 55758611. The next prime is 55758671. The reversal of 55758617 is 71685755.

Together with next prime (55758671) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42719296 + 13039321 = 6536^2 + 3611^2 .

It is a cyclic number.

It is not a de Polignac number, because 55758617 - 2⁸ = 55758361 is a prime.

It is a super-3 number, since 3×55758617³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (55758611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27879308 + 27879309.

It is an arithmetic number, because the mean of its divisors is an integer number (27879309).

Almost surely, 2^55758617 is an apocalyptic number.

It is an amenable number.

55758617 is a deficient number, since it is larger than the sum of its proper divisors (1).

55758617 is an equidigital number, since it uses as much as digits as its factorization.

55758617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294000, while the sum is 44.

The square root of 55758617 is about 7467.1692762385. The cubic root of 55758617 is about 382.0357435739.

The spelling of 55758617 in words is "fifty-five million, seven hundred fifty-eight thousand, six hundred seventeen".