5265111421 has 2 divisors, whose sum is σ = 5265111422. Its totient is φ = 5265111420.

The previous prime is 5265111389. The next prime is 5265111431. The reversal of 5265111421 is 1241115625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4880559321 + 384552100 = 69861^2 + 19610^2 .

It is a cyclic number.

It is not a de Polignac number, because 5265111421 - 2⁵ = 5265111389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5265111421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5265111431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2632555710 + 2632555711.

It is an arithmetic number, because the mean of its divisors is an integer number (2632555711).

Almost surely, 2^5265111421 is an apocalyptic number.

It is an amenable number.

5265111421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5265111421 is an equidigital number, since it uses as much as digits as its factorization.

5265111421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 28.

The square root of 5265111421 is about 72561.0875125229. The cubic root of 5265111421 is about 1739.6792711573.

The spelling of 5265111421 in words is "five billion, two hundred sixty-five million, one hundred eleven thousand, four hundred twenty-one".