51255011 has 16 divisors (see below), whose sum is σ = 54172800. Its totient is φ = 48447168.

The previous prime is 51254969. The next prime is 51255031. The reversal of 51255011 is 11055215.

It is a happy number.

51255011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51255011 - 2⁶ = 51254947 is a prime.

It is a super-2 number, since 2×51255011² = 5254152305220242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51255031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225680 + ... + 225906.

It is an arithmetic number, because the mean of its divisors is an integer number (3385800).

Almost surely, 2^51255011 is an apocalyptic number.

51255011 is a deficient number, since it is larger than the sum of its proper divisors (2917789).

51255011 is a wasteful number, since it uses less digits than its factorization.

51255011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 51255011 is about 7159.2605065048. The cubic root of 51255011 is about 371.4600478608.

The spelling of 51255011 in words is "fifty-one million, two hundred fifty-five thousand, eleven".