51065655 has 8 divisors (see below), whose sum is σ = 81705072. Its totient is φ = 27235008.

The previous prime is 51065653. The next prime is 51065669. The reversal of 51065655 is 55656015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51065655 - 2¹ = 51065653 is a prime.

It is a super-2 number, since 2×51065655² = 5215402241158050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51065653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1702174 + ... + 1702203.

It is an arithmetic number, because the mean of its divisors is an integer number (10213134).

Almost surely, 2^51065655 is an apocalyptic number.

51065655 is a deficient number, since it is larger than the sum of its proper divisors (30639417).

51065655 is a wasteful number, since it uses less digits than its factorization.

51065655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404385.

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

The square root of 51065655 is about 7146.0237195240. The cubic root of 51065655 is about 371.0020439534.

The spelling of 51065655 in words is "fifty-one million, sixty-five thousand, six hundred fifty-five".