54101551221 has 6 divisors (see below), whose sum is σ = 78146685110. Its totient is φ = 36067700808.

The previous prime is 54101551193. The next prime is 54101551243. The reversal of 54101551221 is 12215510145.

It is a happy number.

54101551221 is a `hidden beast` number, since 5 + 4 + 101 + 551 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51173226225 + 2928324996 = 226215^2 + 54114^2 .

It is a de Polignac number, because none of the positive numbers 2^k-54101551221 is a prime.

It is a super-3 number, since 3×54101551221³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54101551921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3005641726 + ... + 3005641743.

Almost surely, 2^54101551221 is an apocalyptic number.

It is an amenable number.

54101551221 is a deficient number, since it is larger than the sum of its proper divisors (24045133889).

54101551221 is a wasteful number, since it uses less digits than its factorization.

54101551221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6011283475 (or 6011283472 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The spelling of 54101551221 in words is "fifty-four billion, one hundred one million, five hundred fifty-one thousand, two hundred twenty-one".