51436523 has 2 divisors, whose sum is σ = 51436524. Its totient is φ = 51436522.

The previous prime is 51436519. The next prime is 51436537. The reversal of 51436523 is 32563415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51436523 - 2² = 51436519 is a prime.

It is not a weakly prime, because it can be changed into another prime (51436123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25718261 + 25718262.

It is an arithmetic number, because the mean of its divisors is an integer number (25718262).

Almost surely, 2^51436523 is an apocalyptic number.

51436523 is a deficient number, since it is larger than the sum of its proper divisors (1).

51436523 is an equidigital number, since it uses as much as digits as its factorization.

51436523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 29.

The square root of 51436523 is about 7171.9260314089. The cubic root of 51436523 is about 371.8980214357.

Adding to 51436523 its reverse (32563415), we get a palindrome (83999938).

The spelling of 51436523 in words is "fifty-one million, four hundred thirty-six thousand, five hundred twenty-three".