53207251 has 2 divisors, whose sum is σ = 53207252. Its totient is φ = 53207250.

The previous prime is 53207197. The next prime is 53207279. The reversal of 53207251 is 15270235.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53207251 - 2⁷ = 53207123 is a prime.

It is not a weakly prime, because it can be changed into another prime (53207281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26603625 + 26603626.

It is an arithmetic number, because the mean of its divisors is an integer number (26603626).

Almost surely, 2^53207251 is an apocalyptic number.

53207251 is a deficient number, since it is larger than the sum of its proper divisors (1).

53207251 is an equidigital number, since it uses as much as digits as its factorization.

53207251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 53207251 is about 7294.3300583398. The cubic root of 53207251 is about 376.1175574583.

Adding to 53207251 its reverse (15270235), we get a palindrome (68477486).

The spelling of 53207251 in words is "fifty-three million, two hundred seven thousand, two hundred fifty-one".