51020530 has 16 divisors (see below), whose sum is σ = 100185984. Its totient is φ = 18552880.

The previous prime is 51020527. The next prime is 51020531. The reversal of 51020530 is 3502015.

It is not an unprimeable number, because it can be changed into a prime (51020531) 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 7 ways as a sum of consecutive naturals, for example, 231802 + ... + 232021.

It is an arithmetic number, because the mean of its divisors is an integer number (6261624).

Almost surely, 2^51020530 is an apocalyptic number.

51020530 is a deficient number, since it is larger than the sum of its proper divisors (49165454).

51020530 is a wasteful number, since it uses less digits than its factorization.

51020530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463841.

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

The square root of 51020530 is about 7142.8656714235. The cubic root of 51020530 is about 370.8927310767.

Adding to 51020530 its reverse (3502015), we get a palindrome (54522545).

The spelling of 51020530 in words is "fifty-one million, twenty thousand, five hundred thirty".