5121491 has 8 divisors (see below), whose sum is σ = 5227200. Its totient is φ = 5016960.

The previous prime is 5121481. The next prime is 5121511. The reversal of 5121491 is 1941215.

It is a happy number.

5121491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5121491 - 2²² = 927187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5121421) 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, 18905 + ... + 19173.

It is an arithmetic number, because the mean of its divisors is an integer number (653400).

Almost surely, 2^5121491 is an apocalyptic number.

5121491 is a deficient number, since it is larger than the sum of its proper divisors (105709).

5121491 is a wasteful number, since it uses less digits than its factorization.

5121491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589.

The product of its digits is 360, while the sum is 23.

The square root of 5121491 is about 2263.0711433802. The cubic root of 5121491 is about 172.3715041107.

The spelling of 5121491 in words is "five million, one hundred twenty-one thousand, four hundred ninety-one".