51009927 has 16 divisors (see below), whose sum is σ = 74064000. Its totient is φ = 31104864.

The previous prime is 51009887. The next prime is 51009941. The reversal of 51009927 is 72990015.

It is not a de Polignac number, because 51009927 - 2⁷ = 51009799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51009947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13777 + ... + 17082.

It is an arithmetic number, because the mean of its divisors is an integer number (4629000).

Almost surely, 2^51009927 is an apocalyptic number.

51009927 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

51009927 is a deficient number, since it is larger than the sum of its proper divisors (23054073).

51009927 is a wasteful number, since it uses less digits than its factorization.

51009927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30910.

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 51009927 is about 7142.1234237445. The cubic root of 51009927 is about 370.8670365306.

The spelling of 51009927 in words is "fifty-one million, nine thousand, nine hundred twenty-seven".