51352531 has 2 divisors, whose sum is σ = 51352532. Its totient is φ = 51352530.

The previous prime is 51352519. The next prime is 51352549. The reversal of 51352531 is 13525315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51352531 - 2¹⁹ = 50828243 is a prime.

It is a super-2 number, since 2×51352531² = 5274164880211922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51352496 and 51352505.

It is not a weakly prime, because it can be changed into another prime (51352571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25676265 + 25676266.

It is an arithmetic number, because the mean of its divisors is an integer number (25676266).

Almost surely, 2^51352531 is an apocalyptic number.

51352531 is a deficient number, since it is larger than the sum of its proper divisors (1).

51352531 is an equidigital number, since it uses as much as digits as its factorization.

51352531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2250, while the sum is 25.

The square root of 51352531 is about 7166.0680292612. The cubic root of 51352531 is about 371.6954839228.

Adding to 51352531 its reverse (13525315), we get a palindrome (64877846).

The spelling of 51352531 in words is "fifty-one million, three hundred fifty-two thousand, five hundred thirty-one".