51002530 has 8 divisors (see below), whose sum is σ = 91804572. Its totient is φ = 20401008.

The previous prime is 51002509. The next prime is 51002531. The reversal of 51002530 is 3520015.

It can be written as a sum of positive squares in 2 ways, for example, as 50993881 + 8649 = 7141^2 + 93^2 .

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 (51002531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550117 + ... + 2550136.

Almost surely, 2^51002530 is an apocalyptic number.

51002530 is a deficient number, since it is larger than the sum of its proper divisors (40802042).

51002530 is a wasteful number, since it uses less digits than its factorization.

51002530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100260.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 51002530 is about 7141.6055617767. The cubic root of 51002530 is about 370.8491090653.

Adding to 51002530 its reverse (3520015), we get a palindrome (54522545).

The spelling of 51002530 in words is "fifty-one million, two thousand, five hundred thirty".