51245454215 has 8 divisors (see below), whose sum is σ = 61500403008. Its totient is φ = 40992458080.

The previous prime is 51245454203. The next prime is 51245454217.

51245454215 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 51245454215 - 2³⁰ = 50171712391 is a prime.

It is a super-2 number, since 2×51245454215² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51245454217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429791 + ... + 535920.

It is an arithmetic number, because the mean of its divisors is an integer number (7687550376).

Almost surely, 2^51245454215 is an apocalyptic number.

51245454215 is a deficient number, since it is larger than the sum of its proper divisors (10254948793).

51245454215 is a wasteful number, since it uses less digits than its factorization.

51245454215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976329.

The product of its digits is 160000, while the sum is 38.

The spelling of 51245454215 in words is "fifty-one billion, two hundred forty-five million, four hundred fifty-four thousand, two hundred fifteen".