55258481 has 2 divisors, whose sum is σ = 55258482. Its totient is φ = 55258480.

The previous prime is 55258439. The next prime is 55258537. The reversal of 55258481 is 18485255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44102881 + 11155600 = 6641^2 + 3340^2 .

It is a cyclic number.

It is not a de Polignac number, because 55258481 - 2¹⁰ = 55257457 is a prime.

It is a super-2 number, since 2×55258481² = 6106999444854722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55258421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27629240 + 27629241.

It is an arithmetic number, because the mean of its divisors is an integer number (27629241).

Almost surely, 2^55258481 is an apocalyptic number.

It is an amenable number.

55258481 is a deficient number, since it is larger than the sum of its proper divisors (1).

55258481 is an equidigital number, since it uses as much as digits as its factorization.

55258481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64000, while the sum is 38.

The square root of 55258481 is about 7433.6048455645. The cubic root of 55258481 is about 380.8900673228.

The spelling of 55258481 in words is "fifty-five million, two hundred fifty-eight thousand, four hundred eighty-one".