5517949 has 4 divisors (see below), whose sum is σ = 5558364. Its totient is φ = 5477536.

The previous prime is 5517947. The next prime is 5517959. The reversal of 5517949 is 9497155.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4347225 + 1170724 = 2085^2 + 1082^2 .

It is a cyclic number.

It is not a de Polignac number, because 5517949 - 2¹ = 5517947 is a prime.

It is a super-2 number, since 2×5517949² = 60895522333202, which contains 22 as substring.

5517949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5517943) 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, 20002 + ... + 20275.

It is an arithmetic number, because the mean of its divisors is an integer number (1389591).

Almost surely, 2^5517949 is an apocalyptic number.

It is an amenable number.

5517949 is a deficient number, since it is larger than the sum of its proper divisors (40415).

5517949 is a wasteful number, since it uses less digits than its factorization.

5517949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40414.

The product of its digits is 56700, while the sum is 40.

The square root of 5517949 is about 2349.0315025559. The cubic root of 5517949 is about 176.7092271180.

The spelling of 5517949 in words is "five million, five hundred seventeen thousand, nine hundred forty-nine".