5251649 has 16 divisors (see below), whose sum is σ = 5927040. Its totient is φ = 4621440.

The previous prime is 5251627. The next prime is 5251663. The reversal of 5251649 is 9461525.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5251649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5251549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31364 + ... + 31530.

It is an arithmetic number, because the mean of its divisors is an integer number (370440).

Almost surely, 2^5251649 is an apocalyptic number.

5251649 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

5251649 is a deficient number, since it is larger than the sum of its proper divisors (675391).

5251649 is a wasteful number, since it uses less digits than its factorization.

5251649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280.

The product of its digits is 10800, while the sum is 32.

The square root of 5251649 is about 2291.6476605272. The cubic root of 5251649 is about 173.8195270631.

The spelling of 5251649 in words is "five million, two hundred fifty-one thousand, six hundred forty-nine".