2545402141 has 4 divisors (see below), whose sum is σ = 2545509532. Its totient is φ = 2545294752.

The previous prime is 2545402133. The next prime is 2545402147. The reversal of 2545402141 is 1412045452.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1977580900 + 567821241 = 44470^2 + 23829^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545402141 - 2³ = 2545402133 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 (2545402147) 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, 720 + ... + 71353.

It is an arithmetic number, because the mean of its divisors is an integer number (636377383).

Almost surely, 2^2545402141 is an apocalyptic number.

It is an amenable number.

2545402141 is a deficient number, since it is larger than the sum of its proper divisors (107391).

2545402141 is an equidigital number, since it uses as much as digits as its factorization.

2545402141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107390.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 2545402141 is about 50451.9785637788. The cubic root of 2545402141 is about 1365.3755921887.

Adding to 2545402141 its reverse (1412045452), we get a palindrome (3957447593).

The spelling of 2545402141 in words is "two billion, five hundred forty-five million, four hundred two thousand, one hundred forty-one".