4453775921 has 32 divisors (see below), whose sum is σ = 5665873920. Its totient is φ = 3414441600.

The previous prime is 4453775903. The next prime is 4453775947. The reversal of 4453775921 is 1295773544.

It is a cyclic number.

It is not a de Polignac number, because 4453775921 - 2⁶ = 4453775857 is a prime.

It is a super-2 number, since 2×4453775921² = 39672239908958796482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4453775971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155870 + ... + 182216.

It is an arithmetic number, because the mean of its divisors is an integer number (177058560).

Almost surely, 2^4453775921 is an apocalyptic number.

4453775921 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4453775921 is a deficient number, since it is larger than the sum of its proper divisors (1212097999).

4453775921 is a wasteful number, since it uses less digits than its factorization.

4453775921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26445.

The product of its digits is 1058400, while the sum is 47.

The square root of 4453775921 is about 66736.6160439679. The cubic root of 4453775921 is about 1645.2912485239.

The spelling of 4453775921 in words is "four billion, four hundred fifty-three million, seven hundred seventy-five thousand, nine hundred twenty-one".