5146210921 has 4 divisors (see below), whose sum is σ = 5323666500. Its totient is φ = 4968755344.

The previous prime is 5146210843. The next prime is 5146210957. The reversal of 5146210921 is 1290126415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4155220521 + 990990400 = 64461^2 + 31480^2 .

It is a cyclic number.

It is not a de Polignac number, because 5146210921 - 2²⁵ = 5112656489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5146210961) 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, 88727746 + ... + 88727803.

It is an arithmetic number, because the mean of its divisors is an integer number (1330916625).

Almost surely, 2^5146210921 is an apocalyptic number.

It is an amenable number.

5146210921 is a deficient number, since it is larger than the sum of its proper divisors (177455579).

5146210921 is a wasteful number, since it uses less digits than its factorization.

5146210921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177455578.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 5146210921 is about 71737.0958500552. The cubic root of 5146210921 is about 1726.4838785044.

The spelling of 5146210921 in words is "five billion, one hundred forty-six million, two hundred ten thousand, nine hundred twenty-one".