51145404523 has 8 divisors (see below), whose sum is σ = 51395806800. Its totient is φ = 50895586560.

The previous prime is 51145404509. The next prime is 51145404533. The reversal of 51145404523 is 32540454115.

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 51145404523 - 2⁵ = 51145404491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51145404503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29928 + ... + 321226.

It is an arithmetic number, because the mean of its divisors is an integer number (6424475850).

Almost surely, 2^51145404523 is an apocalyptic number.

51145404523 is a deficient number, since it is larger than the sum of its proper divisors (250402277).

51145404523 is a wasteful number, since it uses less digits than its factorization.

51145404523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292157.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 51145404523 its reverse (32540454115), we get a palindrome (83685858638).

The spelling of 51145404523 in words is "fifty-one billion, one hundred forty-five million, four hundred four thousand, five hundred twenty-three".