2542537 has 4 divisors (see below), whose sum is σ = 2692116. Its totient is φ = 2392960.

The previous prime is 2542531. The next prime is 2542549. The reversal of 2542537 is 7352452.

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 1263376 + 1279161 = 1124^2 + 1131^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542537 - 2¹⁹ = 2018249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2542531) 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, 74764 + ... + 74797.

It is an arithmetic number, because the mean of its divisors is an integer number (673029).

2^2542537 is an apocalyptic number.

It is an amenable number.

2542537 is a deficient number, since it is larger than the sum of its proper divisors (149579).

2542537 is a wasteful number, since it uses less digits than its factorization.

2542537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149578.

The product of its digits is 8400, while the sum is 28.

The square root of 2542537 is about 1594.5334740920. The cubic root of 2542537 is about 136.4863104431.

Adding to 2542537 its reverse (7352452), we get a palindrome (9894989).

It can be divided in two parts, 254253 and 7, that multiplied together give a palindrome (1779771).

The spelling of 2542537 in words is "two million, five hundred forty-two thousand, five hundred thirty-seven".