51526 has 4 divisors (see below), whose sum is σ = 77292. Its totient is φ = 25762.

The previous prime is 51521. The next prime is 51539. The reversal of 51526 is 62515.

It is a happy number.

51526 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62515 = 5 ⋅12503.

It is a plaindrome in base 12.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12880 + ... + 12883.

It is an arithmetic number, because the mean of its divisors is an integer number (19323).

2⁵¹⁵²⁶ is an apocalyptic number.

51526 is a deficient number, since it is larger than the sum of its proper divisors (25766).

51526 is a wasteful number, since it uses less digits than its factorization.

51526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25765.

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

The square root of 51526 is about 226.9933919743. The cubic root of 51526 is about 37.2113543018.

The spelling of 51526 in words is "fifty-one thousand, five hundred twenty-six".