2529381 has 4 divisors (see below), whose sum is σ = 3372512. Its totient is φ = 1686252.

The previous prime is 2529367. The next prime is 2529391. The reversal of 2529381 is 1839252.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2529381 - 2⁵ = 2529349 is a prime.

It is a super-2 number, since 2×2529381² = 12795536486322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2529301) 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, 421561 + ... + 421566.

It is an arithmetic number, because the mean of its divisors is an integer number (843128).

2^2529381 is an apocalyptic number.

It is an amenable number.

2529381 is a deficient number, since it is larger than the sum of its proper divisors (843131).

2529381 is an equidigital number, since it uses as much as digits as its factorization.

2529381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843130.

The product of its digits is 4320, while the sum is 30.

The square root of 2529381 is about 1590.4027791726. The cubic root of 2529381 is about 136.2504935032.

The spelling of 2529381 in words is "two million, five hundred twenty-nine thousand, three hundred eighty-one".