55986258 has 16 divisors (see below), whose sum is σ = 114577056. Its totient is φ = 18228000.

The previous prime is 55986257. The next prime is 55986277. The reversal of 55986258 is 85268955.

It is a super-2 number, since 2×55986258² = 6268922169685128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55986257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108243 + ... + 108758.

It is an arithmetic number, because the mean of its divisors is an integer number (7161066).

Almost surely, 2^55986258 is an apocalyptic number.

55986258 is an abundant number, since it is smaller than the sum of its proper divisors (58590798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55986258 is a wasteful number, since it uses less digits than its factorization.

55986258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217049.

The product of its digits is 864000, while the sum is 48.

The square root of 55986258 is about 7482.3965412159. The cubic root of 55986258 is about 382.5549393511.

The spelling of 55986258 in words is "fifty-five million, nine hundred eighty-six thousand, two hundred fifty-eight".