2550531421 has 2 divisors, whose sum is σ = 2550531422. Its totient is φ = 2550531420.

The previous prime is 2550531409. The next prime is 2550531427. The reversal of 2550531421 is 1241350552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1480325625 + 1070205796 = 38475^2 + 32714^2 .

It is a cyclic number.

It is not a de Polignac number, because 2550531421 - 2⁹ = 2550530909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2550531421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2550531427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275265710 + 1275265711.

It is an arithmetic number, because the mean of its divisors is an integer number (1275265711).

Almost surely, 2^2550531421 is an apocalyptic number.

It is an amenable number.

2550531421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2550531421 is an equidigital number, since it uses as much as digits as its factorization.

2550531421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2550531421 is about 50502.7862696703. The cubic root of 2550531421 is about 1366.2921067999.

Adding to 2550531421 its reverse (1241350552), we get a palindrome (3791881973).

The spelling of 2550531421 in words is "two billion, five hundred fifty million, five hundred thirty-one thousand, four hundred twenty-one".