51051005242 has 8 divisors (see below), whose sum is σ = 78021347796. Its totient is φ = 25043889312.

The previous prime is 51051005179. The next prime is 51051005249. The reversal of 51051005242 is 24250015015.

It can be written as a sum of positive squares in 2 ways, for example, as 50327986921 + 723018321 = 224339^2 + 26889^2 .

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

It is a super-2 number, since 2×51051005242² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51051005249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240806523 + ... + 240806734.

Almost surely, 2^51051005242 is an apocalyptic number.

51051005242 is a deficient number, since it is larger than the sum of its proper divisors (26970342554).

51051005242 is a wasteful number, since it uses less digits than its factorization.

51051005242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481613312.

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 51051005242 in words is "fifty-one billion, fifty-one million, five thousand, two hundred forty-two".