2542532021 has 2 divisors, whose sum is σ = 2542532022. Its totient is φ = 2542532020.

The previous prime is 2542531973. The next prime is 2542532023. The reversal of 2542532021 is 1202352452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2538748996 + 3783025 = 50386^2 + 1945^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542532021 - 2¹⁰ = 2542530997 is a prime.

Together with 2542532023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2542532023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271266010 + 1271266011.

It is an arithmetic number, because the mean of its divisors is an integer number (1271266011).

Almost surely, 2^2542532021 is an apocalyptic number.

It is an amenable number.

2542532021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542532021 is an equidigital number, since it uses as much as digits as its factorization.

2542532021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2542532021 is about 50423.5264633484. The cubic root of 2542532021 is about 1364.8622135023.

Adding to 2542532021 its reverse (1202352452), we get a palindrome (3744884473).

The spelling of 2542532021 in words is "two billion, five hundred forty-two million, five hundred thirty-two thousand, twenty-one".