51553136 has 20 divisors (see below), whose sum is σ = 102584952. Its totient is φ = 25079616.

The previous prime is 51553121. The next prime is 51553147. The reversal of 51553136 is 63135515.

It is a junction number, because it is equal to n+sod(n) for n = 51553099 and 51553108.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 42950 + ... + 44133.

Almost surely, 2^51553136 is an apocalyptic number.

It is an amenable number.

51553136 is a deficient number, since it is larger than the sum of its proper divisors (51031816).

51553136 is a wasteful number, since it uses less digits than its factorization.

51553136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87128 (or 87122 counting only the distinct ones).

The product of its digits is 6750, while the sum is 29.

The square root of 51553136 is about 7180.0512532990. The cubic root of 51553136 is about 372.1788556822.

The spelling of 51553136 in words is "fifty-one million, five hundred fifty-three thousand, one hundred thirty-six".