5190921 has 6 divisors (see below), whose sum is σ = 7498010. Its totient is φ = 3460608.

The previous prime is 5190877. The next prime is 5190929. The reversal of 5190921 is 1290915.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2822400 + 2368521 = 1680^2 + 1539^2 .

It is not a de Polignac number, because 5190921 - 2¹⁴ = 5174537 is a prime.

It is a Duffinian number.

5190921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5190929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288376 + ... + 288393.

Almost surely, 2^5190921 is an apocalyptic number.

It is an amenable number.

5190921 is a deficient number, since it is larger than the sum of its proper divisors (2307089).

5190921 is a wasteful number, since it uses less digits than its factorization.

5190921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576775 (or 576772 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 5190921 is about 2278.3592780771. The cubic root of 5190921 is about 173.1469343198.

The spelling of 5190921 in words is "five million, one hundred ninety thousand, nine hundred twenty-one".