51091914 has 32 divisors (see below), whose sum is σ = 105431040. Its totient is φ = 16497072.

The previous prime is 51091913. The next prime is 51091921. The reversal of 51091914 is 41919015.

51091914 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51091914² = 5220767352366792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51091913) 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, 28167 + ... + 29925.

It is an arithmetic number, because the mean of its divisors is an integer number (3294720).

Almost surely, 2^51091914 is an apocalyptic number.

51091914 is an abundant number, since it is smaller than the sum of its proper divisors (54339126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51091914 is a wasteful number, since it uses less digits than its factorization.

51091914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 51091914 is about 7147.8607988684. The cubic root of 51091914 is about 371.0656253257.

The spelling of 51091914 in words is "fifty-one million, ninety-one thousand, nine hundred fourteen".