51055401515 has 8 divisors (see below), whose sum is σ = 61293809808. Its totient is φ = 40826102560.

The previous prime is 51055401503. The next prime is 51055401557. The reversal of 51055401515 is 51510455015.

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

It is not a de Polignac number, because 51055401515 - 2⁶ = 51055401451 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2264996 + ... + 2287425.

It is an arithmetic number, because the mean of its divisors is an integer number (7661726226).

Almost surely, 2^51055401515 is an apocalyptic number.

51055401515 is a deficient number, since it is larger than the sum of its proper divisors (10238408293).

51055401515 is a wasteful number, since it uses less digits than its factorization.

51055401515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4554669.

The product of its (nonzero) digits is 12500, while the sum is 32.

The spelling of 51055401515 in words is "fifty-one billion, fifty-five million, four hundred one thousand, five hundred fifteen".