5920781 has 4 divisors (see below), whose sum is σ = 5927292. Its totient is φ = 5914272.

The previous prime is 5920757. The next prime is 5920787. The reversal of 5920781 is 1870295.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3455881 + 2464900 = 1859^2 + 1570^2 .

It is a cyclic number.

It is not a de Polignac number, because 5920781 - 2¹⁴ = 5904397 is a prime.

It is a super-2 number, since 2×5920781² = 70111295299922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5920787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616 + ... + 3801.

It is an arithmetic number, because the mean of its divisors is an integer number (1481823).

Almost surely, 2^5920781 is an apocalyptic number.

It is an amenable number.

5920781 is a deficient number, since it is larger than the sum of its proper divisors (6511).

5920781 is a wasteful number, since it uses less digits than its factorization.

5920781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 5920781 is about 2433.2655013377. The cubic root of 5920781 is about 180.9087887353.

The spelling of 5920781 in words is "five million, nine hundred twenty thousand, seven hundred eighty-one".