55538258 has 8 divisors (see below), whose sum is σ = 85559052. Its totient is φ = 27018576.

The previous prime is 55538251. The next prime is 55538291. The reversal of 55538258 is 85283555.

It can be written as a sum of positive squares in 2 ways, for example, as 54715609 + 822649 = 7397^2 + 907^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55538251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375185 + ... + 375332.

Almost surely, 2^55538258 is an apocalyptic number.

55538258 is a deficient number, since it is larger than the sum of its proper divisors (30020794).

55538258 is a wasteful number, since it uses less digits than its factorization.

55538258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750556.

The product of its digits is 240000, while the sum is 41.

The square root of 55538258 is about 7452.3994793623. The cubic root of 55538258 is about 381.5318085573.

The spelling of 55538258 in words is "fifty-five million, five hundred thirty-eight thousand, two hundred fifty-eight".