51551000162 has 8 divisors (see below), whose sum is σ = 77335292892. Its totient is φ = 25772569200.

The previous prime is 51551000161. The next prime is 51551000191. The reversal of 51551000162 is 26100015515.

It can be written as a sum of positive squares in 2 ways, for example, as 51297267121 + 253733041 = 226489^2 + 15929^2 .

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

It is not an unprimeable number, because it can be changed into a prime (51551000161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1443389 + ... + 1478672.

Almost surely, 2^51551000162 is an apocalyptic number.

51551000162 is a deficient number, since it is larger than the sum of its proper divisors (25784292730).

51551000162 is a wasteful number, since it uses less digits than its factorization.

51551000162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930884.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 51551000162 its reverse (26100015515), we get a palindrome (77651015677).

The spelling of 51551000162 in words is "fifty-one billion, five hundred fifty-one million, one hundred sixty-two", and thus it is an aban number.