5506421 has 2 divisors, whose sum is σ = 5506422. Its totient is φ = 5506420.

The previous prime is 5506387. The next prime is 5506427. The reversal of 5506421 is 1246055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5499025 + 7396 = 2345^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 5506421 - 2¹⁰ = 5505397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5506427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2753210 + 2753211.

It is an arithmetic number, because the mean of its divisors is an integer number (2753211).

Almost surely, 2^5506421 is an apocalyptic number.

It is an amenable number.

5506421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5506421 is an equidigital number, since it uses as much as digits as its factorization.

5506421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 5506421 is about 2346.5764423943. The cubic root of 5506421 is about 176.5860820722.

The spelling of 5506421 in words is "five million, five hundred six thousand, four hundred twenty-one".