1453013021 has 8 divisors (see below), whose sum is σ = 1471363200. Its totient is φ = 1434708000.

The previous prime is 1453012993. The next prime is 1453013033. The reversal of 1453013021 is 1203103541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1453013021 is a prime.

It is a super-2 number, since 2×1453013021² = 4222493678391092882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1453012984 and 1453013002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1453013621) 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, 55970 + ... + 77708.

It is an arithmetic number, because the mean of its divisors is an integer number (183920400).

Almost surely, 2^1453013021 is an apocalyptic number.

It is an amenable number.

1453013021 is a deficient number, since it is larger than the sum of its proper divisors (18350179).

1453013021 is an equidigital number, since it uses as much as digits as its factorization.

1453013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22579.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1453013021 is about 38118.4079022196. The cubic root of 1453013021 is about 1132.6346286094.

Adding to 1453013021 its reverse (1203103541), we get a palindrome (2656116562).

The spelling of 1453013021 in words is "one billion, four hundred fifty-three million, thirteen thousand, twenty-one".