2551243533 has 16 divisors (see below), whose sum is σ = 3604144896. Its totient is φ = 1599718400.

The previous prime is 2551243531. The next prime is 2551243547. The reversal of 2551243533 is 3353421552.

It is a cyclic number.

It is not a de Polignac number, because 2551243533 - 2¹ = 2551243531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2551243494 and 2551243503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551243531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64933 + ... + 96533.

It is an arithmetic number, because the mean of its divisors is an integer number (225259056).

Almost surely, 2^2551243533 is an apocalyptic number.

It is an amenable number.

2551243533 is a deficient number, since it is larger than the sum of its proper divisors (1052901363).

2551243533 is a wasteful number, since it uses less digits than its factorization.

2551243533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33204.

The product of its digits is 54000, while the sum is 33.

The square root of 2551243533 is about 50509.8360025055. The cubic root of 2551243533 is about 1366.4192518673.

The spelling of 2551243533 in words is "two billion, five hundred fifty-one million, two hundred forty-three thousand, five hundred thirty-three".