2512381 has 4 divisors (see below), whose sum is σ = 2540700. Its totient is φ = 2484064.

The previous prime is 2512369. The next prime is 2512399. The reversal of 2512381 is 1832152.

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 217156 + 2295225 = 466^2 + 1515^2 .

It is a cyclic number.

It is not a de Polignac number, because 2512381 - 2¹³ = 2504189 is a prime.

It is a super-2 number, since 2×2512381² = 12624116578322, 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 (2512331) 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, 14026 + ... + 14203.

It is an arithmetic number, because the mean of its divisors is an integer number (635175).

2^2512381 is an apocalyptic number.

It is an amenable number.

2512381 is a deficient number, since it is larger than the sum of its proper divisors (28319).

2512381 is an equidigital number, since it uses as much as digits as its factorization.

2512381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28318.

The product of its digits is 480, while the sum is 22.

The square root of 2512381 is about 1585.0492105925. The cubic root of 2512381 is about 135.9445600156.

The spelling of 2512381 in words is "two million, five hundred twelve thousand, three hundred eighty-one".