51558936 has 128 divisors (see below), whose sum is σ = 154103040. Its totient is φ = 14169600.

The previous prime is 51558931. The next prime is 51558959. The reversal of 51558936 is 63985515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51558931) 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 31 ways as a sum of consecutive naturals, for example, 284766 + ... + 284946.

It is an arithmetic number, because the mean of its divisors is an integer number (1203930).

Almost surely, 2^51558936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51558936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77051520).

51558936 is an abundant number, since it is smaller than the sum of its proper divisors (102544104).

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

51558936 is a wasteful number, since it uses less digits than its factorization.

51558936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 293 counting only the distinct ones).

The product of its digits is 162000, while the sum is 42.

The square root of 51558936 is about 7180.4551387778. The cubic root of 51558936 is about 372.1928125209.

The spelling of 51558936 in words is "fifty-one million, five hundred fifty-eight thousand, nine hundred thirty-six".