5154523421 has 2 divisors, whose sum is σ = 5154523422. Its totient is φ = 5154523420.

The previous prime is 5154523343. The next prime is 5154523447. The reversal of 5154523421 is 1243254515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2901976900 + 2252546521 = 53870^2 + 47461^2 .

It is a cyclic number.

It is not a de Polignac number, because 5154523421 - 2³⁰ = 4080781597 is a prime.

It is a super-2 number, since 2×5154523421² = 53138223395275086482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5154513421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2577261710 + 2577261711.

It is an arithmetic number, because the mean of its divisors is an integer number (2577261711).

Almost surely, 2^5154523421 is an apocalyptic number.

It is an amenable number.

5154523421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5154523421 is an equidigital number, since it uses as much as digits as its factorization.

5154523421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24000, while the sum is 32.

The square root of 5154523421 is about 71795.0097221248. The cubic root of 5154523421 is about 1727.4129554038.

Adding to 5154523421 its reverse (1243254515), we get a palindrome (6397777936).

The spelling of 5154523421 in words is "five billion, one hundred fifty-four million, five hundred twenty-three thousand, four hundred twenty-one".