424145251 has 2 divisors, whose sum is σ = 424145252. Its totient is φ = 424145250.

The previous prime is 424145243. The next prime is 424145321. The reversal of 424145251 is 152541424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424145251 - 2³ = 424145243 is a prime.

It is not a weakly prime, because it can be changed into another prime (424145651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212072625 + 212072626.

It is an arithmetic number, because the mean of its divisors is an integer number (212072626).

Almost surely, 2^424145251 is an apocalyptic number.

424145251 is a deficient number, since it is larger than the sum of its proper divisors (1).

424145251 is an equidigital number, since it uses as much as digits as its factorization.

424145251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6400, while the sum is 28.

The square root of 424145251 is about 20594.7869860312. The cubic root of 424145251 is about 751.3429278837.

Adding to 424145251 its reverse (152541424), we get a palindrome (576686675).

The spelling of 424145251 in words is "four hundred twenty-four million, one hundred forty-five thousand, two hundred fifty-one".