51004501155 has 12 divisors (see below), whose sum is σ = 88407802080. Its totient is φ = 27202400592.

The previous prime is 51004501133. The next prime is 51004501157. The reversal of 51004501155 is 55110540015.

51004501155 is a `hidden beast` number, since 5 + 1 + 0 + 0 + 4 + 501 + 155 = 666.

51004501155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51004501155 - 2¹⁴ = 51004484771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51004501157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 566716635 + ... + 566716724.

It is an arithmetic number, because the mean of its divisors is an integer number (7367316840).

Almost surely, 2^51004501155 is an apocalyptic number.

51004501155 is a deficient number, since it is larger than the sum of its proper divisors (37403300925).

51004501155 is a wasteful number, since it uses less digits than its factorization.

51004501155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133433370 (or 1133433367 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The spelling of 51004501155 in words is "fifty-one billion, four million, five hundred one thousand, one hundred fifty-five".