53012251 has 2 divisors, whose sum is σ = 53012252. Its totient is φ = 53012250.

The previous prime is 53012191. The next prime is 53012257. The reversal of 53012251 is 15221035.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53012251 - 2⁷ = 53012123 is a prime.

It is not a weakly prime, because it can be changed into another prime (53012257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26506125 + 26506126.

It is an arithmetic number, because the mean of its divisors is an integer number (26506126).

Almost surely, 2^53012251 is an apocalyptic number.

53012251 is a deficient number, since it is larger than the sum of its proper divisors (1).

53012251 is an equidigital number, since it uses as much as digits as its factorization.

53012251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 53012251 is about 7280.9512427979. The cubic root of 53012251 is about 375.6575154922.

Adding to 53012251 its reverse (15221035), we get a palindrome (68233286).

The spelling of 53012251 in words is "fifty-three million, twelve thousand, two hundred fifty-one".