2251541542403 has 4 divisors (see below), whose sum is σ = 2312394016560. Its totient is φ = 2190689068248.

The previous prime is 2251541542381. The next prime is 2251541542421. The reversal of 2251541542403 is 3042451451522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2251541542403 - 2⁸ = 2251541542147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2251541242403) 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, 30426237023 + ... + 30426237096.

It is an arithmetic number, because the mean of its divisors is an integer number (578098504140).

Almost surely, 2^{2251541542403} is an apocalyptic number.

2251541542403 is a deficient number, since it is larger than the sum of its proper divisors (60852474157).

2251541542403 is an equidigital number, since it uses as much as digits as its factorization.

2251541542403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60852474156.

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 2251541542403 its reverse (3042451451522), we get a palindrome (5293992993925).

The spelling of 2251541542403 in words is "two trillion, two hundred fifty-one billion, five hundred forty-one million, five hundred forty-two thousand, four hundred three".