51228655 has 16 divisors (see below), whose sum is σ = 64908000. Its totient is φ = 38707200.

The previous prime is 51228649. The next prime is 51228673. The reversal of 51228655 is 55682215.

It is not a de Polignac number, because 51228655 - 2⁵ = 51228623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51228655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42055 + ... + 43255.

It is an arithmetic number, because the mean of its divisors is an integer number (4056750).

Almost surely, 2^51228655 is an apocalyptic number.

51228655 is a deficient number, since it is larger than the sum of its proper divisors (13679345).

51228655 is a wasteful number, since it uses less digits than its factorization.

51228655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674.

The product of its digits is 24000, while the sum is 34.

The square root of 51228655 is about 7157.4195769146. The cubic root of 51228655 is about 371.3963670655.

The spelling of 51228655 in words is "fifty-one million, two hundred twenty-eight thousand, six hundred fifty-five".