2545233421 has 4 divisors (see below), whose sum is σ = 2694953052. Its totient is φ = 2395513792.

The previous prime is 2545233419. The next prime is 2545233451. The reversal of 2545233421 is 1243325452.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2295751396 + 249482025 = 47914^2 + 15795^2 .

It is not a de Polignac number, because 2545233421 - 2¹ = 2545233419 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 (2545233451) 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 3 ways as a sum of consecutive naturals, for example, 74859790 + ... + 74859823.

It is an arithmetic number, because the mean of its divisors is an integer number (673738263).

Almost surely, 2^2545233421 is an apocalyptic number.

It is an amenable number.

2545233421 is a deficient number, since it is larger than the sum of its proper divisors (149719631).

2545233421 is a wasteful number, since it uses less digits than its factorization.

2545233421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149719630.

The product of its digits is 28800, while the sum is 31.

The square root of 2545233421 is about 50450.3064510019. The cubic root of 2545233421 is about 1365.3454239026.

Adding to 2545233421 its reverse (1243325452), we get a palindrome (3788558873).

The spelling of 2545233421 in words is "two billion, five hundred forty-five million, two hundred thirty-three thousand, four hundred twenty-one".