5240781 has 56 divisors (see below), whose sum is σ = 9793280. Its totient is φ = 2729376.

The previous prime is 5240779. The next prime is 5240783. The reversal of 5240781 is 1870425.

It is an interprime number because it is at equal distance from previous prime (5240779) and next prime (5240783).

It is not a de Polignac number, because 5240781 - 2¹ = 5240779 is a prime.

It is a super-2 number, since 2×5240781² = 54931570979922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5240783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 66300 + ... + 66378.

It is an arithmetic number, because the mean of its divisors is an integer number (174880).

Almost surely, 2^5240781 is an apocalyptic number.

It is an amenable number.

5240781 is a deficient number, since it is larger than the sum of its proper divisors (4552499).

5240781 is an equidigital number, since it uses as much as digits as its factorization.

5240781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 5240781 is about 2289.2752128130. The cubic root of 5240781 is about 173.6995409261.

The spelling of 5240781 in words is "five million, two hundred forty thousand, seven hundred eighty-one".