51520134 has 32 divisors (see below), whose sum is σ = 110522880. Its totient is φ = 15960672.

The previous prime is 51520129. The next prime is 51520151. The reversal of 51520134 is 43102515.

It is a self number, because there is not a number n which added to its sum of digits gives 51520134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1779 + ... + 10305.

It is an arithmetic number, because the mean of its divisors is an integer number (3453840).

Almost surely, 2^51520134 is an apocalyptic number.

51520134 is an abundant number, since it is smaller than the sum of its proper divisors (59002746).

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

51520134 is a wasteful number, since it uses less digits than its factorization.

51520134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8604.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51520134 is about 7177.7527123745. The cubic root of 51520134 is about 372.0994213392.

Adding to 51520134 its reverse (43102515), we get a palindrome (94622649).

The spelling of 51520134 in words is "fifty-one million, five hundred twenty thousand, one hundred thirty-four".