51145523 has 8 divisors (see below), whose sum is σ = 60087216. Its totient is φ = 42919200.

The previous prime is 51145519. The next prime is 51145553. The reversal of 51145523 is 32554115.

51145523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51145523 - 2² = 51145519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51145492 and 51145501.

It is not an unprimeable number, because it can be changed into a prime (51145553) 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 in 7 ways as a sum of consecutive naturals, for example, 178688 + ... + 178973.

It is an arithmetic number, because the mean of its divisors is an integer number (7510902).

Almost surely, 2^51145523 is an apocalyptic number.

51145523 is a deficient number, since it is larger than the sum of its proper divisors (8941693).

51145523 is a wasteful number, since it uses less digits than its factorization.

51145523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357685.

The product of its digits is 3000, while the sum is 26.

The square root of 51145523 is about 7151.6098187751. The cubic root of 51145523 is about 371.1953621217.

Adding to 51145523 its reverse (32554115), we get a palindrome (83699638).

The spelling of 51145523 in words is "fifty-one million, one hundred forty-five thousand, five hundred twenty-three".