52638251 has 2 divisors, whose sum is σ = 52638252. Its totient is φ = 52638250.

The previous prime is 52638221. The next prime is 52638259. The reversal of 52638251 is 15283625.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52638251 - 2²² = 48443947 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (52638259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26319125 + 26319126.

It is an arithmetic number, because the mean of its divisors is an integer number (26319126).

Almost surely, 2^52638251 is an apocalyptic number.

52638251 is a deficient number, since it is larger than the sum of its proper divisors (1).

52638251 is an equidigital number, since it uses as much as digits as its factorization.

52638251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 32.

The square root of 52638251 is about 7255.2223260214. Note that the first 3 decimals coincide. The cubic root of 52638251 is about 374.7720119371.

The spelling of 52638251 in words is "fifty-two million, six hundred thirty-eight thousand, two hundred fifty-one".