5425781 has 4 divisors (see below), whose sum is σ = 5459232. Its totient is φ = 5392332.

The previous prime is 5425759. The next prime is 5425787. The reversal of 5425781 is 1875245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1875245 = 5 ⋅375049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5425781 is a prime.

It is a super-2 number, since 2×5425781² = 58878198919922, which contains 22 as substring.

It is a Duffinian 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 (5425787) 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, 16481 + ... + 16806.

It is an arithmetic number, because the mean of its divisors is an integer number (1364808).

Almost surely, 2^5425781 is an apocalyptic number.

It is an amenable number.

5425781 is a deficient number, since it is larger than the sum of its proper divisors (33451).

5425781 is a wasteful number, since it uses less digits than its factorization.

5425781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33450.

The product of its digits is 11200, while the sum is 32.

The square root of 5425781 is about 2329.3305905345. The cubic root of 5425781 is about 175.7198215178.

The spelling of 5425781 in words is "five million, four hundred twenty-five thousand, seven hundred eighty-one".