2541455645 has 8 divisors (see below), whose sum is σ = 3057589080. Its totient is φ = 2027936320.

The previous prime is 2541455641. The next prime is 2541455677. The reversal of 2541455645 is 5465541452.

It can be written as a sum of positive squares in 4 ways, for example, as 34550884 + 2506904761 = 5878^2 + 50069^2 .

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

It is not a de Polignac number, because 2541455645 - 2² = 2541455641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541455641) 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, 651386 + ... + 655275.

It is an arithmetic number, because the mean of its divisors is an integer number (382198635).

Almost surely, 2^2541455645 is an apocalyptic number.

It is an amenable number.

2541455645 is a deficient number, since it is larger than the sum of its proper divisors (516133435).

2541455645 is a wasteful number, since it uses less digits than its factorization.

2541455645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307055.

The product of its digits is 480000, while the sum is 41.

The square root of 2541455645 is about 50412.8519824062. The cubic root of 2541455645 is about 1364.6695823927.

The spelling of 2541455645 in words is "two billion, five hundred forty-one million, four hundred fifty-five thousand, six hundred forty-five".