55458211 has 4 divisors (see below), whose sum is σ = 56367424. Its totient is φ = 54549000.

The previous prime is 55458203. The next prime is 55458217. The reversal of 55458211 is 11285455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55458211 - 2³ = 55458203 is a prime.

It is a super-2 number, since 2×55458211² = 6151226334641042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55458217) 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, 454515 + ... + 454636.

It is an arithmetic number, because the mean of its divisors is an integer number (14091856).

Almost surely, 2^55458211 is an apocalyptic number.

55458211 is a deficient number, since it is larger than the sum of its proper divisors (909213).

55458211 is an equidigital number, since it uses as much as digits as its factorization.

55458211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909212.

The product of its digits is 8000, while the sum is 31.

The square root of 55458211 is about 7447.0269906856. The cubic root of 55458211 is about 381.3484204920.

The spelling of 55458211 in words is "fifty-five million, four hundred fifty-eight thousand, two hundred eleven".