51056655 has 32 divisors (see below), whose sum is σ = 88833024. Its totient is φ = 24890496.

The previous prime is 51056651. The next prime is 51056657. The reversal of 51056655 is 55665015.

It is not a de Polignac number, because 51056655 - 2² = 51056651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51056651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19642 + ... + 22088.

It is an arithmetic number, because the mean of its divisors is an integer number (2776032).

Almost surely, 2^51056655 is an apocalyptic number.

51056655 is a deficient number, since it is larger than the sum of its proper divisors (37776369).

51056655 is a wasteful number, since it uses less digits than its factorization.

51056655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 51056655 is about 7145.3939709438. The cubic root of 51056655 is about 370.9802470818.

The spelling of 51056655 in words is "fifty-one million, fifty-six thousand, six hundred fifty-five".