51245450155 has 8 divisors (see below), whose sum is σ = 62412369552. Its totient is φ = 40384473888.

The previous prime is 51245450153. The next prime is 51245450159. The reversal of 51245450155 is 55105454215.

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 51245450155 - 2¹ = 51245450153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51245450153) 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, 76485412 + ... + 76486081.

It is an arithmetic number, because the mean of its divisors is an integer number (7801546194).

Almost surely, 2^51245450155 is an apocalyptic number.

51245450155 is a deficient number, since it is larger than the sum of its proper divisors (11166919397).

51245450155 is a wasteful number, since it uses less digits than its factorization.

51245450155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152971565.

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 51245450155 in words is "fifty-one billion, two hundred forty-five million, four hundred fifty thousand, one hundred fifty-five".