4021453553 has 8 divisors (see below), whose sum is σ = 4436425896. Its totient is φ = 3621571200.

The previous prime is 4021453549. The next prime is 4021453567. The reversal of 4021453553 is 3553541204.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21270544 + 4000183009 = 4612^2 + 63247^2 .

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

It is not a de Polignac number, because 4021453553 - 2² = 4021453549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4021453573) 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, 3771938 + ... + 3773003.

It is an arithmetic number, because the mean of its divisors is an integer number (554553237).

Almost surely, 2^4021453553 is an apocalyptic number.

It is an amenable number.

4021453553 is a deficient number, since it is larger than the sum of its proper divisors (414972343).

4021453553 is a wasteful number, since it uses less digits than its factorization.

4021453553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7544995.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 4021453553 is about 63414.9316249730. The cubic root of 4021453553 is about 1590.2339427408.

Adding to 4021453553 its reverse (3553541204), we get a palindrome (7574994757).

The spelling of 4021453553 in words is "four billion, twenty-one million, four hundred fifty-three thousand, five hundred fifty-three".