5421751 has 2 divisors, whose sum is σ = 5421752. Its totient is φ = 5421750.

The previous prime is 5421749. The next prime is 5421763. The reversal of 5421751 is 1571245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5421751 - 2¹ = 5421749 is a prime.

Together with 5421749, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5421151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2710875 + 2710876.

It is an arithmetic number, because the mean of its divisors is an integer number (2710876).

Almost surely, 2^5421751 is an apocalyptic number.

5421751 is a deficient number, since it is larger than the sum of its proper divisors (1).

5421751 is an equidigital number, since it uses as much as digits as its factorization.

5421751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1400, while the sum is 25.

The square root of 5421751 is about 2328.4653744473. The cubic root of 5421751 is about 175.6763054304.

Adding to 5421751 its reverse (1571245), we get a palindrome (6992996).

The spelling of 5421751 in words is "five million, four hundred twenty-one thousand, seven hundred fifty-one".