52021445451 has 8 divisors (see below), whose sum is σ = 70974995520. Its totient is φ = 33874429512.

The previous prime is 52021445423. The next prime is 52021445453. The reversal of 52021445451 is 15454412025.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52021445451 - 2¹¹ = 52021443403 is a prime.

It is a super-2 number, since 2×52021445451² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52021445453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201633381 + ... + 201633638.

It is an arithmetic number, because the mean of its divisors is an integer number (8871874440).

Almost surely, 2^52021445451 is an apocalyptic number.

52021445451 is a deficient number, since it is larger than the sum of its proper divisors (18953550069).

52021445451 is a wasteful number, since it uses less digits than its factorization.

52021445451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403267065.

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

Adding to 52021445451 its reverse (15454412025), we get a palindrome (67475857476).

The spelling of 52021445451 in words is "fifty-two billion, twenty-one million, four hundred forty-five thousand, four hundred fifty-one".