635240051 has 2 divisors, whose sum is σ = 635240052. Its totient is φ = 635240050.

The previous prime is 635240017. The next prime is 635240063. The reversal of 635240051 is 150042536.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 635240051 - 2⁶ = 635239987 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 635240051.

It is not a weakly prime, because it can be changed into another prime (635240651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317620025 + 317620026.

It is an arithmetic number, because the mean of its divisors is an integer number (317620026).

Almost surely, 2^635240051 is an apocalyptic number.

635240051 is a deficient number, since it is larger than the sum of its proper divisors (1).

635240051 is an equidigital number, since it uses as much as digits as its factorization.

635240051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 635240051 is about 25203.9689533216. The cubic root of 635240051 is about 859.6320992628.

Adding to 635240051 its reverse (150042536), we get a palindrome (785282587).

The spelling of 635240051 in words is "six hundred thirty-five million, two hundred forty thousand, fifty-one".