2542531973 has 2 divisors, whose sum is σ = 2542531974. Its totient is φ = 2542531972.

The previous prime is 2542531969. The next prime is 2542532021. The reversal of 2542531973 is 3791352452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2465916964 + 76615009 = 49658^2 + 8753^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542531973 - 2² = 2542531969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2542531973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2542531913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271265986 + 1271265987.

It is an arithmetic number, because the mean of its divisors is an integer number (1271265987).

Almost surely, 2^2542531973 is an apocalyptic number.

It is an amenable number.

2542531973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542531973 is an equidigital number, since it uses as much as digits as its factorization.

2542531973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 41.

The square root of 2542531973 is about 50423.5259873801. The cubic root of 2542531973 is about 1364.8622049133.

The spelling of 2542531973 in words is "two billion, five hundred forty-two million, five hundred thirty-one thousand, nine hundred seventy-three".