51849136 has 20 divisors (see below), whose sum is σ = 103173952. Its totient is φ = 25223616.

The previous prime is 51849121. The next prime is 51849139. The reversal of 51849136 is 63194815.

51849136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 51849095 and 51849104.

It is not an unprimeable number, because it can be changed into a prime (51849139) 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 3 ways as a sum of consecutive naturals, for example, 43200 + ... + 44383.

Almost surely, 2^51849136 is an apocalyptic number.

It is an amenable number.

51849136 is a deficient number, since it is larger than the sum of its proper divisors (51324816).

51849136 is a wasteful number, since it uses less digits than its factorization.

51849136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87628 (or 87622 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 51849136 is about 7200.6344164941. The cubic root of 51849136 is about 372.8898034990.

The spelling of 51849136 in words is "fifty-one million, eight hundred forty-nine thousand, one hundred thirty-six".