2551240023 has 4 divisors (see below), whose sum is σ = 3401653368. Its totient is φ = 1700826680.

The previous prime is 2551240019. The next prime is 2551240033. The reversal of 2551240023 is 3200421552.

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 2551240023 - 2² = 2551240019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2551239975 and 2551240002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551240033) 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, 425206668 + ... + 425206673.

It is an arithmetic number, because the mean of its divisors is an integer number (850413342).

Almost surely, 2^2551240023 is an apocalyptic number.

2551240023 is a deficient number, since it is larger than the sum of its proper divisors (850413345).

2551240023 is an equidigital number, since it uses as much as digits as its factorization.

2551240023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850413344.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2551240023 is about 50509.8012567858. The cubic root of 2551240023 is about 1366.4186252273.

Adding to 2551240023 its reverse (3200421552), we get a palindrome (5751661575).

The spelling of 2551240023 in words is "two billion, five hundred fifty-one million, two hundred forty thousand, twenty-three".