5420805 has 16 divisors (see below), whose sum is σ = 9340800. Its totient is φ = 2668608.

The previous prime is 5420803. The next prime is 5420819. The reversal of 5420805 is 5080245.

It is not a de Polignac number, because 5420805 - 2¹ = 5420803 is a prime.

5420805 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5420803) 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 15 ways as a sum of consecutive naturals, for example, 13705 + ... + 14094.

It is an arithmetic number, because the mean of its divisors is an integer number (583800).

Almost surely, 2^5420805 is an apocalyptic number.

It is an amenable number.

5420805 is a deficient number, since it is larger than the sum of its proper divisors (3919995).

5420805 is a wasteful number, since it uses less digits than its factorization.

5420805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27820.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 5420805 is about 2328.2622274993. The cubic root of 5420805 is about 175.6660873630. Note that the first 3 decimals are identical.

The spelling of 5420805 in words is "five million, four hundred twenty thousand, eight hundred five".