2454345021 has 4 divisors (see below), whose sum is σ = 3272460032. Its totient is φ = 1636230012.

The previous prime is 2454345001. The next prime is 2454345031. The reversal of 2454345021 is 1205434542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2454345021 - 2¹⁸ = 2454082877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2454345021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2454345001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409057501 + ... + 409057506.

It is an arithmetic number, because the mean of its divisors is an integer number (818115008).

Almost surely, 2^2454345021 is an apocalyptic number.

It is an amenable number.

2454345021 is a deficient number, since it is larger than the sum of its proper divisors (818115011).

2454345021 is an equidigital number, since it uses as much as digits as its factorization.

2454345021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818115010.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 2454345021 is about 49541.3465804070. The cubic root of 2454345021 is about 1348.8962209631.

Adding to 2454345021 its reverse (1205434542), we get a palindrome (3659779563).

The spelling of 2454345021 in words is "two billion, four hundred fifty-four million, three hundred forty-five thousand, twenty-one".