5121887 has 4 divisors (see below), whose sum is σ = 5391480. Its totient is φ = 4852296.

The previous prime is 5121877. The next prime is 5121889. The reversal of 5121887 is 7881215.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7881215 = 5 ⋅1576243.

It is not a de Polignac number, because 5121887 - 2⁴ = 5121871 is a prime.

It is a super-3 number, since 3×5121887³ (a number of 21 digits) contains 333 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 (5121889) 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, 134768 + ... + 134805.

It is an arithmetic number, because the mean of its divisors is an integer number (1347870).

Almost surely, 2^5121887 is an apocalyptic number.

5121887 is a deficient number, since it is larger than the sum of its proper divisors (269593).

5121887 is a wasteful number, since it uses less digits than its factorization.

5121887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269592.

The product of its digits is 4480, while the sum is 32.

The square root of 5121887 is about 2263.1586334148. The cubic root of 5121887 is about 172.3759466553.

The spelling of 5121887 in words is "five million, one hundred twenty-one thousand, eight hundred eighty-seven".