2515881 has 8 divisors (see below), whose sum is σ = 3551904. Its totient is φ = 1578560.

The previous prime is 2515879. The next prime is 2515897. The reversal of 2515881 is 1885152.

2515881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2515881 - 2¹ = 2515879 is a prime.

It is a super-2 number, since 2×2515881² = 12659314412322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2515871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24615 + ... + 24716.

It is an arithmetic number, because the mean of its divisors is an integer number (443988).

2^2515881 is an apocalyptic number.

It is an amenable number.

2515881 is a deficient number, since it is larger than the sum of its proper divisors (1036023).

2515881 is a wasteful number, since it uses less digits than its factorization.

2515881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49351.

The product of its digits is 3200, while the sum is 30.

The square root of 2515881 is about 1586.1528930087. The cubic root of 2515881 is about 136.0076588824.

The spelling of 2515881 in words is "two million, five hundred fifteen thousand, eight hundred eighty-one".