51320523 has 8 divisors (see below), whose sum is σ = 68544000. Its totient is φ = 34155368.

The previous prime is 51320519. The next prime is 51320527. The reversal of 51320523 is 32502315.

It is an interprime number because it is at equal distance from previous prime (51320519) and next prime (51320527).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51320523 - 2² = 51320519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51320523.

It is not an unprimeable number, because it can be changed into a prime (51320527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12483 + ... + 16076.

It is an arithmetic number, because the mean of its divisors is an integer number (8568000).

Almost surely, 2^51320523 is an apocalyptic number.

51320523 is a deficient number, since it is larger than the sum of its proper divisors (17223477).

51320523 is a wasteful number, since it uses less digits than its factorization.

51320523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29161.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 51320523 is about 7163.8343783200. The cubic root of 51320523 is about 371.6182420192.

Adding to 51320523 its reverse (32502315), we get a palindrome (83822838).

The spelling of 51320523 in words is "fifty-one million, three hundred twenty thousand, five hundred twenty-three".