51120255 has 32 divisors (see below), whose sum is σ = 85017600. Its totient is φ = 26210432.

The previous prime is 51120253. The next prime is 51120259. The reversal of 51120255 is 55202115.

It is a cyclic number.

It is not a de Polignac number, because 51120255 - 2¹ = 51120253 is a prime.

It is a super-2 number, since 2×51120255² = 5226560942530050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51120253) 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, 40981 + ... + 42209.

It is an arithmetic number, because the mean of its divisors is an integer number (2656800).

Almost surely, 2^51120255 is an apocalyptic number.

51120255 is a deficient number, since it is larger than the sum of its proper divisors (33897345).

51120255 is a wasteful number, since it uses less digits than its factorization.

51120255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 51120255 is about 7149.8430052694. The cubic root of 51120255 is about 371.1342234408.

The spelling of 51120255 in words is "fifty-one million, one hundred twenty thousand, two hundred fifty-five".