54212245521 has 64 divisors (see below), whose sum is σ = 85784832000. Its totient is φ = 29812363776.

The previous prime is 54212245487. The next prime is 54212245537. The reversal of 54212245521 is 12554221245.

It is not a de Polignac number, because 54212245521 - 2¹¹ = 54212243473 is a prime.

It is a super-2 number, since 2×54212245521² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54212245541) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 51679405 + ... + 51680453.

It is an arithmetic number, because the mean of its divisors is an integer number (1340388000).

Almost surely, 2^54212245521 is an apocalyptic number.

It is an amenable number.

54212245521 is a deficient number, since it is larger than the sum of its proper divisors (31572586479).

54212245521 is a wasteful number, since it uses less digits than its factorization.

54212245521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958.

The product of its digits is 32000, while the sum is 33.

Adding to 54212245521 its reverse (12554221245), we get a palindrome (66766466766).

The spelling of 54212245521 in words is "fifty-four billion, two hundred twelve million, two hundred forty-five thousand, five hundred twenty-one".