54665222421 has 4 divisors (see below), whose sum is σ = 72886963232. Its totient is φ = 36443481612.

The previous prime is 54665222419. The next prime is 54665222429. The reversal of 54665222421 is 12422256645.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 54665222421 - 2¹ = 54665222419 is a prime.

It is a super-2 number, since 2×54665222421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54665222421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54665222429) 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 3 ways as a sum of consecutive naturals, for example, 9110870401 + ... + 9110870406.

It is an arithmetic number, because the mean of its divisors is an integer number (18221740808).

Almost surely, 2^54665222421 is an apocalyptic number.

It is an amenable number.

54665222421 is a deficient number, since it is larger than the sum of its proper divisors (18221740811).

54665222421 is a wasteful number, since it uses less digits than its factorization.

54665222421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18221740810.

The product of its digits is 230400, while the sum is 39.

The spelling of 54665222421 in words is "fifty-four billion, six hundred sixty-five million, two hundred twenty-two thousand, four hundred twenty-one".