54221013 has 24 divisors (see below), whose sum is σ = 97646016. Its totient is φ = 28166400.

The previous prime is 54220997. The next prime is 54221029. The reversal of 54221013 is 31012245.

It is an interprime number because it is at equal distance from previous prime (54220997) and next prime (54221029).

It is not a de Polignac number, because 54221013 - 2⁴ = 54220997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54221053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38428 + ... + 39813.

It is an arithmetic number, because the mean of its divisors is an integer number (4068584).

Almost surely, 2^54221013 is an apocalyptic number.

It is an amenable number.

54221013 is a deficient number, since it is larger than the sum of its proper divisors (43425003).

54221013 is a wasteful number, since it uses less digits than its factorization.

54221013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78265 (or 78262 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 54221013 is about 7363.4919026234. The cubic root of 54221013 is about 378.4912777409.

Adding to 54221013 its reverse (31012245), we get a palindrome (85233258).

The spelling of 54221013 in words is "fifty-four million, two hundred twenty-one thousand, thirteen".