2445448457 has 4 divisors (see below), whose sum is σ = 2449615056. Its totient is φ = 2441281860.

The previous prime is 2445448393. The next prime is 2445448501. The reversal of 2445448457 is 7548445442.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7548445442 = 2 ⋅3774222721.

It is a cyclic number.

It is not a de Polignac number, because 2445448457 - 2⁶ = 2445448393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2445418457) 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, 2082419 + ... + 2083592.

It is an arithmetic number, because the mean of its divisors is an integer number (612403764).

Almost surely, 2^2445448457 is an apocalyptic number.

It is an amenable number.

2445448457 is a deficient number, since it is larger than the sum of its proper divisors (4166599).

2445448457 is an equidigital number, since it uses as much as digits as its factorization.

2445448457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166598.

The product of its digits is 2867200, while the sum is 47.

The square root of 2445448457 is about 49451.4757818207. The cubic root of 2445448457 is about 1347.2644114349.

The spelling of 2445448457 in words is "two billion, four hundred forty-five million, four hundred forty-eight thousand, four hundred fifty-seven".