51158002274 has 8 divisors (see below), whose sum is σ = 77496776028. Its totient is φ = 25325743600.

The previous prime is 51158002219. The next prime is 51158002277. The reversal of 51158002274 is 47220085115.

It can be written as a sum of positive squares in 2 ways, for example, as 37758319225 + 13399683049 = 194315^2 + 115757^2 .

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 (51158002277) 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, 126628517 + ... + 126628920.

Almost surely, 2^51158002274 is an apocalyptic number.

51158002274 is a deficient number, since it is larger than the sum of its proper divisors (26338773754).

51158002274 is a wasteful number, since it uses less digits than its factorization.

51158002274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253257540.

The product of its (nonzero) digits is 22400, while the sum is 35.

Adding to 51158002274 its reverse (47220085115), we get a palindrome (98378087389).

The spelling of 51158002274 in words is "fifty-one billion, one hundred fifty-eight million, two thousand, two hundred seventy-four".