51201530155 has 32 divisors (see below), whose sum is σ = 69035328000. Its totient is φ = 36250486272.

The previous prime is 51201530141. The next prime is 51201530183. The reversal of 51201530155 is 55103510215.

It is a cyclic number.

It is not a de Polignac number, because 51201530155 - 2⁵ = 51201530123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106605 + ... + 337294.

It is an arithmetic number, because the mean of its divisors is an integer number (2157354000).

Almost surely, 2^51201530155 is an apocalyptic number.

51201530155 is a deficient number, since it is larger than the sum of its proper divisors (17833797845).

51201530155 is a wasteful number, since it uses less digits than its factorization.

51201530155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444003.

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 51201530155 in words is "fifty-one billion, two hundred one million, five hundred thirty thousand, one hundred fifty-five".