5011921 has 4 divisors (see below), whose sum is σ = 5019700. Its totient is φ = 5004144.

The previous prime is 5011901. The next prime is 5011927. The reversal of 5011921 is 1291105.

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 1166400 + 3845521 = 1080^2 + 1961^2 .

It is a cyclic number.

It is not a de Polignac number, because 5011921 - 2¹⁵ = 4979153 is a prime.

It is a super-2 number, since 2×5011921² = 50238704220482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5011927) 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, 2826 + ... + 4243.

It is an arithmetic number, because the mean of its divisors is an integer number (1254925).

Almost surely, 2^5011921 is an apocalyptic number.

It is an amenable number.

5011921 is a deficient number, since it is larger than the sum of its proper divisors (7779).

5011921 is an equidigital number, since it uses as much as digits as its factorization.

5011921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7778.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 5011921 is about 2238.7320071862. The cubic root of 5011921 is about 171.1333842966.

The spelling of 5011921 in words is "five million, eleven thousand, nine hundred twenty-one".