52649251 has 2 divisors, whose sum is σ = 52649252. Its totient is φ = 52649250.

The previous prime is 52649249. The next prime is 52649257. The reversal of 52649251 is 15294625.

It is a happy number.

52649251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52649251 - 2¹ = 52649249 is a prime.

It is a super-2 number, since 2×52649251² = 5543887261722002, which contains 22 as substring.

Together with 52649249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (52649257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26324625 + 26324626.

It is an arithmetic number, because the mean of its divisors is an integer number (26324626).

Almost surely, 2^52649251 is an apocalyptic number.

52649251 is a deficient number, since it is larger than the sum of its proper divisors (1).

52649251 is an equidigital number, since it uses as much as digits as its factorization.

52649251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 34.

The square root of 52649251 is about 7255.9803610539. The cubic root of 52649251 is about 374.7981159263.

It can be divided in two parts, 52649 and 251, that added together give a square (52900 = 230²).

The spelling of 52649251 in words is "fifty-two million, six hundred forty-nine thousand, two hundred fifty-one".