4545458421 has 96 divisors (see below), whose sum is σ = 7624286208. Its totient is φ = 2356421760.

The previous prime is 4545458417. The next prime is 4545458429. The reversal of 4545458421 is 1248545454.

It is a happy number.

It is not a de Polignac number, because 4545458421 - 2² = 4545458417 is a prime.

It is a super-2 number, since 2×4545458421² = 41322384514079626482, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4545458429) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23073295 + ... + 23073491.

It is an arithmetic number, because the mean of its divisors is an integer number (79419648).

Almost surely, 2^4545458421 is an apocalyptic number.

It is an amenable number.

4545458421 is a deficient number, since it is larger than the sum of its proper divisors (3078827787).

4545458421 is a wasteful number, since it uses less digits than its factorization.

4545458421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 328 counting only the distinct ones).

The product of its digits is 512000, while the sum is 42.

The square root of 4545458421 is about 67420.0149881324. The cubic root of 4545458421 is about 1656.5042831491.

The spelling of 4545458421 in words is "four billion, five hundred forty-five million, four hundred fifty-eight thousand, four hundred twenty-one".