5121919 has 8 divisors (see below), whose sum is σ = 5707008. Its totient is φ = 4556760.

The previous prime is 5121917. The next prime is 5121923. The reversal of 5121919 is 9191215.

5121919 = T₂₈₂ + T₂₈₃ + ... + T₃₇₅.

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

It is a cyclic number.

It is not a de Polignac number, because 5121919 - 2¹ = 5121917 is a prime.

It is a super-2 number, since 2×5121919² = 52468108485122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121911) 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, 4437 + ... + 5470.

It is an arithmetic number, because the mean of its divisors is an integer number (713376).

Almost surely, 2^5121919 is an apocalyptic number.

5121919 is a deficient number, since it is larger than the sum of its proper divisors (585089).

5121919 is a wasteful number, since it uses less digits than its factorization.

5121919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9965.

The product of its digits is 810, while the sum is 28.

The square root of 5121919 is about 2263.1657031689. The cubic root of 5121919 is about 172.3763056388.

The spelling of 5121919 in words is "five million, one hundred twenty-one thousand, nine hundred nineteen".