2499531 has 4 divisors (see below), whose sum is σ = 3332712. Its totient is φ = 1666352.

The previous prime is 2499521. The next prime is 2499551. The reversal of 2499531 is 1359942.

2499531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2499531 - 2⁷ = 2499403 is a prime.

It is a super-2 number, since 2×2499531² = 12495310439922, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁵ + 4⁹ + 9³ + 9⁶ + 5⁷ + 3¹³ + 1 .

It is a D-number.

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 2499492 and 2499501.

It is not an unprimeable number, because it can be changed into a prime (2499521) 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 3 ways as a sum of consecutive naturals, for example, 416586 + ... + 416591.

It is an arithmetic number, because the mean of its divisors is an integer number (833178).

2^2499531 is an apocalyptic number.

2499531 is a deficient number, since it is larger than the sum of its proper divisors (833181).

2499531 is an equidigital number, since it uses as much as digits as its factorization.

2499531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833180.

The product of its digits is 9720, while the sum is 33.

The square root of 2499531 is about 1580.9905123055. The cubic root of 2499531 is about 135.7123932199.

The spelling of 2499531 in words is "two million, four hundred ninety-nine thousand, five hundred thirty-one".