2507881 has 2 divisors, whose sum is σ = 2507882. Its totient is φ = 2507880.

The previous prime is 2507863. The next prime is 2507899. The reversal of 2507881 is 1887052.

It is a balanced prime because it is at equal distance from previous prime (2507863) and next prime (2507899).

It can be written as a sum of positive squares in only one way, i.e., 2073600 + 434281 = 1440^2 + 659^2 .

It is a cyclic number.

It is not a de Polignac number, because 2507881 - 2¹³ = 2499689 is a prime.

It is a super-2 number, since 2×2507881² = 12578934220322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2507821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253940 + 1253941.

It is an arithmetic number, because the mean of its divisors is an integer number (1253941).

2^2507881 is an apocalyptic number.

It is an amenable number.

2507881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2507881 is an equidigital number, since it uses as much as digits as its factorization.

2507881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 2507881 is about 1583.6290601021. The cubic root of 2507881 is about 135.8633467329.

The spelling of 2507881 in words is "two million, five hundred seven thousand, eight hundred eighty-one".