2513749 has 18 divisors (see below), whose sum is σ = 3078114. Its totient is φ = 2046240.

The previous prime is 2513747. The next prime is 2513761. The reversal of 2513749 is 9473152.

It can be written as a sum of positive squares in 3 ways, for example, as 33124 + 2480625 = 182^2 + 1575^2 .

It is not a de Polignac number, because 2513749 - 2¹ = 2513747 is a prime.

It is a Duffinian number.

2513749 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2513749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2513747) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 41179 + ... + 41239.

2^2513749 is an apocalyptic number.

2513749 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2513749 is a deficient number, since it is larger than the sum of its proper divisors (564365).

2513749 is an equidigital number, since it uses as much as digits as its factorization.

2513749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 97 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 2513749 is about 1585.4806842091. The cubic root of 2513749 is about 135.9692296303.

The spelling of 2513749 in words is "two million, five hundred thirteen thousand, seven hundred forty-nine".