51452539 has 2 divisors, whose sum is σ = 51452540. Its totient is φ = 51452538.

The previous prime is 51452537. The next prime is 51452563. The reversal of 51452539 is 93525415.

51452539 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 51452539 - 2¹ = 51452537 is a prime.

Together with 51452537, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51452537) 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, 25726269 + 25726270.

It is an arithmetic number, because the mean of its divisors is an integer number (25726270).

Almost surely, 2^51452539 is an apocalyptic number.

51452539 is a deficient number, since it is larger than the sum of its proper divisors (1).

51452539 is an equidigital number, since it uses as much as digits as its factorization.

51452539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 34.

The square root of 51452539 is about 7173.0425204372. The cubic root of 51452539 is about 371.9366172314.

It can be divided in two parts, 51452 and 539, that multiplied together give a triangular number (27732628 = T₇₄₄₇).

The spelling of 51452539 in words is "fifty-one million, four hundred fifty-two thousand, five hundred thirty-nine".