2543262137 has 4 divisors (see below), whose sum is σ = 2738897700. Its totient is φ = 2347626576.

The previous prime is 2543262037. The next prime is 2543262143. The reversal of 2543262137 is 7312623452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1319941561 + 1223320576 = 36331^2 + 34976^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543262137 - 2⁸ = 2543261881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2543262097 and 2543262106.

It is not an unprimeable number, because it can be changed into a prime (2543262037) 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, 97817762 + ... + 97817787.

It is an arithmetic number, because the mean of its divisors is an integer number (684724425).

Almost surely, 2^2543262137 is an apocalyptic number.

It is an amenable number.

2543262137 is a deficient number, since it is larger than the sum of its proper divisors (195635563).

2543262137 is a wasteful number, since it uses less digits than its factorization.

2543262137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195635562.

The product of its digits is 60480, while the sum is 35.

The square root of 2543262137 is about 50430.7657784412. The cubic root of 2543262137 is about 1364.9928460582.

Adding to 2543262137 its reverse (7312623452), we get a palindrome (9855885589).

The spelling of 2543262137 in words is "two billion, five hundred forty-three million, two hundred sixty-two thousand, one hundred thirty-seven".