2545421043 has 32 divisors (see below), whose sum is σ = 3747313152. Its totient is φ = 1524096000.

The previous prime is 2545421003. The next prime is 2545421057. The reversal of 2545421043 is 3401245452.

It is not a de Polignac number, because 2545421043 - 2⁶ = 2545420979 is a prime.

It is a super-2 number, since 2×2545421043² = 12958336572294415698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2545421043.

It is not an unprimeable number, because it can be changed into a prime (2545421003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 980355 + ... + 982947.

It is an arithmetic number, because the mean of its divisors is an integer number (117103536).

Almost surely, 2^2545421043 is an apocalyptic number.

2545421043 is a deficient number, since it is larger than the sum of its proper divisors (1201892109).

2545421043 is a wasteful number, since it uses less digits than its factorization.

2545421043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 2545421043 is about 50452.1658900785. The cubic root of 2545421043 is about 1365.3789719121.

Adding to 2545421043 its reverse (3401245452), we get a palindrome (5946666495).

The spelling of 2545421043 in words is "two billion, five hundred forty-five million, four hundred twenty-one thousand, forty-three".