5249661 has 4 divisors (see below), whose sum is σ = 6999552. Its totient is φ = 3499772.

The previous prime is 5249659. The next prime is 5249663. The reversal of 5249661 is 1669425.

5249661 is digitally balanced in base 3, 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (5249659) and next prime (5249663).

It is a cyclic number.

It is not a de Polignac number, because 5249661 - 2¹ = 5249659 is a prime.

It is a super-2 number, since 2×5249661² = 55117881229842, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5249663) 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, 874941 + ... + 874946.

It is an arithmetic number, because the mean of its divisors is an integer number (1749888).

Almost surely, 2^5249661 is an apocalyptic number.

It is an amenable number.

5249661 is a deficient number, since it is larger than the sum of its proper divisors (1749891).

5249661 is a wasteful number, since it uses less digits than its factorization.

5249661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749890.

The product of its digits is 12960, while the sum is 33.

The square root of 5249661 is about 2291.2138704189. The cubic root of 5249661 is about 173.7975912970.

The spelling of 5249661 in words is "five million, two hundred forty-nine thousand, six hundred sixty-one".