51241284 has 18 divisors (see below), whose sum is σ = 129526670. Its totient is φ = 17080416.

The previous prime is 51241279. The next prime is 51241291. The reversal of 51241284 is 48214215.

It can be written as a sum of positive squares in only one way, i.e., 50722884 + 518400 = 7122^2 + 720^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 711649 + ... + 711720.

Almost surely, 2^51241284 is an apocalyptic number.

It is an amenable number.

51241284 is an abundant number, since it is smaller than the sum of its proper divisors (78285386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51241284 is a wasteful number, since it uses less digits than its factorization.

51241284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423379 (or 1423374 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 51241284 is about 7158.3017539078. The cubic root of 51241284 is about 371.4268837061.

Adding to 51241284 its reverse (48214215), we get a palindrome (99455499).

The spelling of 51241284 in words is "fifty-one million, two hundred forty-one thousand, two hundred eighty-four".