2515381 has 8 divisors (see below), whose sum is σ = 2785824. Its totient is φ = 2251920.

The previous prime is 2515379. The next prime is 2515397. The reversal of 2515381 is 1835152.

It is a happy number.

2515381 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 not a de Polignac number, because 2515381 - 2¹ = 2515379 is a prime.

It is a super-2 number, since 2×2515381² = 12654283150322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2515301) 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, 970 + ... + 2443.

It is an arithmetic number, because the mean of its divisors is an integer number (348228).

2^2515381 is an apocalyptic number.

It is an amenable number.

2515381 is a deficient number, since it is larger than the sum of its proper divisors (270443).

2515381 is a wasteful number, since it uses less digits than its factorization.

2515381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491.

The product of its digits is 1200, while the sum is 25.

The square root of 2515381 is about 1585.9952711153. The cubic root of 2515381 is about 135.9986483430.

The spelling of 2515381 in words is "two million, five hundred fifteen thousand, three hundred eighty-one".