54213555 has 32 divisors (see below), whose sum is σ = 99613440. Its totient is φ = 24900480.

The previous prime is 54213539. The next prime is 54213569. The reversal of 54213555 is 55531245.

It is a happy number.

It is not a de Polignac number, because 54213555 - 2⁴ = 54213539 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5512 + ... + 11781.

It is an arithmetic number, because the mean of its divisors is an integer number (3112920).

Almost surely, 2^54213555 is an apocalyptic number.

54213555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

54213555 is a deficient number, since it is larger than the sum of its proper divisors (45399885).

54213555 is a wasteful number, since it uses less digits than its factorization.

54213555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17331.

The product of its digits is 15000, while the sum is 30.

The square root of 54213555 is about 7362.9854678656. The cubic root of 54213555 is about 378.4739233536.

The spelling of 54213555 in words is "fifty-four million, two hundred thirteen thousand, five hundred fifty-five".