51485136 has 40 divisors (see below), whose sum is σ = 140005920. Its totient is φ = 16258176.

The previous prime is 51485131. The next prime is 51485171. The reversal of 51485136 is 63158415.

It is a junction number, because it is equal to n+sod(n) for n = 51485097 and 51485106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51485131) 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, 27315 + ... + 29138.

It is an arithmetic number, because the mean of its divisors is an integer number (3500148).

Almost surely, 2^51485136 is an apocalyptic number.

It is an amenable number.

51485136 is an abundant number, since it is smaller than the sum of its proper divisors (88520784).

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

51485136 is a wasteful number, since it uses less digits than its factorization.

51485136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56483 (or 56477 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 51485136 is about 7175.3143485146. The cubic root of 51485136 is about 372.0151456430.

The spelling of 51485136 in words is "fifty-one million, four hundred eighty-five thousand, one hundred thirty-six".