55598513 has 2 divisors, whose sum is σ = 55598514. Its totient is φ = 55598512.

The previous prime is 55598507. The next prime is 55598519. The reversal of 55598513 is 31589555.

55598513 = 5272² + 5273².

55598513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (55598507) and next prime (55598519).

It can be written as a sum of positive squares in only one way, i.e., 27804529 + 27793984 = 5273^2 + 5272^2 .

It is a cyclic number.

It is not a de Polignac number, because 55598513 - 2²⁴ = 38821297 is a prime.

It is a super-2 number, since 2×55598513² = 6182389295622338, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (55598519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27799256 + 27799257.

It is an arithmetic number, because the mean of its divisors is an integer number (27799257).

Almost surely, 2^55598513 is an apocalyptic number.

55598513 is the 5273-rd centered square number.

It is an amenable number.

55598513 is a deficient number, since it is larger than the sum of its proper divisors (1).

55598513 is an equidigital number, since it uses as much as digits as its factorization.

55598513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135000, while the sum is 41.

The square root of 55598513 is about 7456.4410411402. The cubic root of 55598513 is about 381.6697368436.

The spelling of 55598513 in words is "fifty-five million, five hundred ninety-eight thousand, five hundred thirteen".