4553453721 has 16 divisors (see below), whose sum is σ = 6480829440. Its totient is φ = 2835357840.

The previous prime is 4553453701. The next prime is 4553453789. The reversal of 4553453721 is 1273543554.

It is not a de Polignac number, because 4553453721 - 2⁶ = 4553453657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4553453721.

It is not an unprimeable number, because it can be changed into a prime (4553453701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558525 + ... + 566618.

It is an arithmetic number, because the mean of its divisors is an integer number (405051840).

Almost surely, 2^4553453721 is an apocalyptic number.

It is an amenable number.

4553453721 is a deficient number, since it is larger than the sum of its proper divisors (1927375719).

4553453721 is a wasteful number, since it uses less digits than its factorization.

4553453721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125236.

The product of its digits is 252000, while the sum is 39.

The square root of 4553453721 is about 67479.2836432042. The cubic root of 4553453721 is about 1657.4749583198.

The spelling of 4553453721 in words is "four billion, five hundred fifty-three million, four hundred fifty-three thousand, seven hundred twenty-one".