5154421999 has 2 divisors, whose sum is σ = 5154422000. Its totient is φ = 5154421998.

The previous prime is 5154421939. The next prime is 5154422029. The reversal of 5154421999 is 9991244515.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5154421999 - 2⁷ = 5154421871 is a prime.

It is a super-2 number, since 2×5154421999² = 53136132287550312002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5154421919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2577210999 + 2577211000.

It is an arithmetic number, because the mean of its divisors is an integer number (2577211000).

Almost surely, 2^5154421999 is an apocalyptic number.

5154421999 is a deficient number, since it is larger than the sum of its proper divisors (1).

5154421999 is an equidigital number, since it uses as much as digits as its factorization.

5154421999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 49.

The square root of 5154421999 is about 71794.3033882215. The cubic root of 5154421999 is about 1727.4016256253.

The spelling of 5154421999 in words is "five billion, one hundred fifty-four million, four hundred twenty-one thousand, nine hundred ninety-nine".