52021220454 has 24 divisors (see below), whose sum is σ = 128814450960. Its totient is φ = 14863205808.

The previous prime is 52021220441. The next prime is 52021220477. The reversal of 52021220454 is 45402212025.

52021220454 is a `hidden beast` number, since 5 + 202 + 1 + 2 + 2 + 0 + 454 = 666.

It is a super-2 number, since 2×52021220454² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 206433289 + ... + 206433540.

It is an arithmetic number, because the mean of its divisors is an integer number (5367268790).

Almost surely, 2^52021220454 is an apocalyptic number.

52021220454 is an abundant number, since it is smaller than the sum of its proper divisors (76793230506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52021220454 is a wasteful number, since it uses less digits than its factorization.

52021220454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412866844 (or 412866841 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 52021220454 its reverse (45402212025), we get a palindrome (97423432479).

The spelling of 52021220454 in words is "fifty-two billion, twenty-one million, two hundred twenty thousand, four hundred fifty-four".