5159921 has 8 divisors (see below), whose sum is σ = 5662440. Its totient is φ = 4672512.

The previous prime is 5159911. The next prime is 5159927. The reversal of 5159921 is 1299515.

5159921 = 166² + 167² + ... + 271².

It can be written as a sum of positive squares in 4 ways, for example, as 490000 + 4669921 = 700^2 + 2161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5159921 - 2¹⁸ = 4897777 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 (5159927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3056 + ... + 4433.

It is an arithmetic number, because the mean of its divisors is an integer number (707805).

Almost surely, 2^5159921 is an apocalyptic number.

It is an amenable number.

5159921 is a deficient number, since it is larger than the sum of its proper divisors (502519).

5159921 is a wasteful number, since it uses less digits than its factorization.

5159921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555.

The product of its digits is 4050, while the sum is 32.

The square root of 5159921 is about 2271.5459493482. The cubic root of 5159921 is about 172.8015700768.

The spelling of 5159921 in words is "five million, one hundred fifty-nine thousand, nine hundred twenty-one".