5266456021 has 4 divisors (see below), whose sum is σ = 5269942944. Its totient is φ = 5262969100.

The previous prime is 5266455973. The next prime is 5266456033. The reversal of 5266456021 is 1206546625.

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 a cyclic number.

It is not a de Polignac number, because 5266456021 - 2⁷ = 5266455893 is a prime.

It is a super-2 number, since 2×5266456021² = 55471118042254304882, which contains 22 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 (5266456051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1741195 + ... + 1744216.

It is an arithmetic number, because the mean of its divisors is an integer number (1317485736).

Almost surely, 2^5266456021 is an apocalyptic number.

It is an amenable number.

5266456021 is a deficient number, since it is larger than the sum of its proper divisors (3486923).

5266456021 is a wasteful number, since it uses less digits than its factorization.

5266456021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486922.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 5266456021 is about 72570.3522176929. The cubic root of 5266456021 is about 1739.8273511923.

The spelling of 5266456021 in words is "five billion, two hundred sixty-six million, four hundred fifty-six thousand, twenty-one".