5215949 has 4 divisors (see below), whose sum is σ = 5220540. Its totient is φ = 5211360.

The previous prime is 5215939. The next prime is 5215961. The reversal of 5215949 is 9495125.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 243049 + 4972900 = 493^2 + 2230^2 .

It is a cyclic number.

It is not a de Polignac number, because 5215949 - 2¹² = 5211853 is a prime.

It is a super-2 number, since 2×5215949² = 54412247941202, which contains 22 as substring.

It is a Duffinian 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 (5215939) 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, 809 + ... + 3329.

It is an arithmetic number, because the mean of its divisors is an integer number (1305135).

Almost surely, 2^5215949 is an apocalyptic number.

It is an amenable number.

5215949 is a deficient number, since it is larger than the sum of its proper divisors (4591).

5215949 is a wasteful number, since it uses less digits than its factorization.

5215949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4590.

The product of its digits is 16200, while the sum is 35.

The square root of 5215949 is about 2283.8452224264. The cubic root of 5215949 is about 173.4247639756.

The spelling of 5215949 in words is "five million, two hundred fifteen thousand, nine hundred forty-nine".