2537881 has 2 divisors, whose sum is σ = 2537882. Its totient is φ = 2537880.

The previous prime is 2537869. The next prime is 2537897. The reversal of 2537881 is 1887352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1798281 + 739600 = 1341^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 2537881 - 2¹³ = 2529689 is a prime.

It is a super-2 number, since 2×2537881² = 12881679940322, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2537851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1268940 + 1268941.

It is an arithmetic number, because the mean of its divisors is an integer number (1268941).

2^2537881 is an apocalyptic number.

It is an amenable number.

2537881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2537881 is an equidigital number, since it uses as much as digits as its factorization.

2537881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 34.

The square root of 2537881 is about 1593.0728169170. The cubic root of 2537881 is about 136.4029463908.

The spelling of 2537881 in words is "two million, five hundred thirty-seven thousand, eight hundred eighty-one".