5390781 has 32 divisors (see below), whose sum is σ = 8363520. Its totient is φ = 3057600.

The previous prime is 5390773. The next prime is 5390783. The reversal of 5390781 is 1870935.

5390781 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5390781 - 2³ = 5390773 is a prime.

It is a super-2 number, since 2×5390781² = 58121039579922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5390783) 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 31 ways as a sum of consecutive naturals, for example, 41086 + ... + 41216.

It is an arithmetic number, because the mean of its divisors is an integer number (261360).

Almost surely, 2^5390781 is an apocalyptic number.

It is an amenable number.

5390781 is a deficient number, since it is larger than the sum of its proper divisors (2972739).

5390781 is a wasteful number, since it uses less digits than its factorization.

5390781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 5390781 is about 2321.8055474135. The cubic root of 5390781 is about 175.3411684618.

The spelling of 5390781 in words is "five million, three hundred ninety thousand, seven hundred eighty-one".