5420509 has 2 divisors, whose sum is σ = 5420510. Its totient is φ = 5420508.

The previous prime is 5420483. The next prime is 5420531. The reversal of 5420509 is 9050245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5405625 + 14884 = 2325^2 + 122^2 .

It is a cyclic number.

It is not a de Polignac number, because 5420509 - 2¹⁵ = 5387741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5420539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2710254 + 2710255.

It is an arithmetic number, because the mean of its divisors is an integer number (2710255).

Almost surely, 2^5420509 is an apocalyptic number.

It is an amenable number.

5420509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5420509 is an equidigital number, since it uses as much as digits as its factorization.

5420509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 5420509 is about 2328.1986599086. The cubic root of 5420509 is about 175.6628899223.

It can be divided in two parts, 5420 and 509, that added together give a square (5929 = 77²).

The spelling of 5420509 in words is "five million, four hundred twenty thousand, five hundred nine".