51242030 has 16 divisors (see below), whose sum is σ = 105412320. Its totient is φ = 17568672.

The previous prime is 51242027. The next prime is 51242033. The reversal of 51242030 is 3024215.

51242030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51242027) and next prime (51242033).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51242033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365945 + ... + 366084.

It is an arithmetic number, because the mean of its divisors is an integer number (6588270).

Almost surely, 2^51242030 is an apocalyptic number.

51242030 is an abundant number, since it is smaller than the sum of its proper divisors (54170290).

51242030 is a wasteful number, since it uses less digits than its factorization.

51242030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732043.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 51242030 is about 7158.3538610493. The cubic root of 51242030 is about 371.4286861792.

Adding to 51242030 its reverse (3024215), we get a palindrome (54266245).

The spelling of 51242030 in words is "fifty-one million, two hundred forty-two thousand, thirty".