5501921 has 2 divisors, whose sum is σ = 5501922. Its totient is φ = 5501920.

The previous prime is 5501879. The next prime is 5501933. The reversal of 5501921 is 1291055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4682896 + 819025 = 2164^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 5501921 - 2¹⁴ = 5485537 is a prime.

It is a super-2 number, since 2×5501921² = 60542269380482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5501941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2750960 + 2750961.

It is an arithmetic number, because the mean of its divisors is an integer number (2750961).

Almost surely, 2^5501921 is an apocalyptic number.

It is an amenable number.

5501921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5501921 is an equidigital number, since it uses as much as digits as its factorization.

5501921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 5501921 is about 2345.6174027322. The cubic root of 5501921 is about 176.5379652807.

Adding to 5501921 its reverse (1291055), we get a palindrome (6792976).

The spelling of 5501921 in words is "five million, five hundred one thousand, nine hundred twenty-one".