2542444521 has 4 divisors (see below), whose sum is σ = 3389926032. Its totient is φ = 1694963012.

The previous prime is 2542444519. The next prime is 2542444523. The reversal of 2542444521 is 1254442452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2542444519) and next prime (2542444523).

It is a cyclic number.

It is not a de Polignac number, because 2542444521 - 2¹ = 2542444519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2542444523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423740751 + ... + 423740756.

It is an arithmetic number, because the mean of its divisors is an integer number (847481508).

Almost surely, 2^2542444521 is an apocalyptic number.

It is an amenable number.

2542444521 is a deficient number, since it is larger than the sum of its proper divisors (847481511).

2542444521 is an equidigital number, since it uses as much as digits as its factorization.

2542444521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847481510.

The product of its digits is 51200, while the sum is 33.

The square root of 2542444521 is about 50422.6588053427. The cubic root of 2542444521 is about 1364.8465563001.

Adding to 2542444521 its reverse (1254442452), we get a palindrome (3796886973).

The spelling of 2542444521 in words is "two billion, five hundred forty-two million, four hundred forty-four thousand, five hundred twenty-one".