5256749 has 4 divisors (see below), whose sum is σ = 5533440. Its totient is φ = 4980060.

The previous prime is 5256737. The next prime is 5256751. The reversal of 5256749 is 9476525.

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 a cyclic number.

It is not a de Polignac number, because 5256749 - 2¹⁶ = 5191213 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5256049) 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, 138317 + ... + 138354.

It is an arithmetic number, because the mean of its divisors is an integer number (1383360).

Almost surely, 2^5256749 is an apocalyptic number.

It is an amenable number.

5256749 is a deficient number, since it is larger than the sum of its proper divisors (276691).

5256749 is a wasteful number, since it uses less digits than its factorization.

5256749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276690.

The product of its digits is 75600, while the sum is 38.

The square root of 5256749 is about 2292.7601270085. The cubic root of 5256749 is about 173.8757756041.

The spelling of 5256749 in words is "five million, two hundred fifty-six thousand, seven hundred forty-nine".