5045451421 has 2 divisors, whose sum is σ = 5045451422. Its totient is φ = 5045451420.

The previous prime is 5045451413. The next prime is 5045451427. The reversal of 5045451421 is 1241545405.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4011828921 + 1033622500 = 63339^2 + 32150^2 .

It is a cyclic number.

It is not a de Polignac number, because 5045451421 - 2³ = 5045451413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5045451427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2522725710 + 2522725711.

It is an arithmetic number, because the mean of its divisors is an integer number (2522725711).

Almost surely, 2^5045451421 is an apocalyptic number.

It is an amenable number.

5045451421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5045451421 is an equidigital number, since it uses as much as digits as its factorization.

5045451421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 5045451421 is about 71031.3411178474. The cubic root of 5045451421 is about 1715.1417144977.

Adding to 5045451421 its reverse (1241545405), we get a palindrome (6286996826).

The spelling of 5045451421 in words is "five billion, forty-five million, four hundred fifty-one thousand, four hundred twenty-one".