2545444461 has 8 divisors (see below), whose sum is σ = 3878772544. Its totient is φ = 1454539680.

The previous prime is 2545444423. The next prime is 2545444483. The reversal of 2545444461 is 1644445452.

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

It is not a de Polignac number, because 2545444461 - 2⁶ = 2545444397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545442461) 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, 60605800 + ... + 60605841.

It is an arithmetic number, because the mean of its divisors is an integer number (484846568).

Almost surely, 2^2545444461 is an apocalyptic number.

2545444461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2545444461 is a deficient number, since it is larger than the sum of its proper divisors (1333328083).

2545444461 is a wasteful number, since it uses less digits than its factorization.

2545444461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121211651.

The product of its digits is 307200, while the sum is 39.

The square root of 2545444461 is about 50452.3979707605. The cubic root of 2545444461 is about 1365.3831590841.

Subtracting from 2545444461 its reverse (1644445452), we obtain a palindrome (900999009).

The spelling of 2545444461 in words is "two billion, five hundred forty-five million, four hundred forty-four thousand, four hundred sixty-one".