51615552 has 56 divisors (see below), whose sum is σ = 143764000. Its totient is φ = 16298496.

The previous prime is 51615547. The next prime is 51615569. The reversal of 51615552 is 25551615.

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 7 ways as a sum of consecutive naturals, for example, 3427 + ... + 10722.

Almost surely, 2^51615552 is an apocalyptic number.

It is an amenable number.

51615552 is an abundant number, since it is smaller than the sum of its proper divisors (92148448).

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

51615552 is a wasteful number, since it uses less digits than its factorization.

51615552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14183 (or 14173 counting only the distinct ones).

The product of its digits is 7500, while the sum is 30.

The square root of 51615552 is about 7184.3964255879. The cubic root of 51615552 is about 372.3289955744.

The spelling of 51615552 in words is "fifty-one million, six hundred fifteen thousand, five hundred fifty-two".