51111066 has 16 divisors (see below), whose sum is σ = 102312000. Its totient is φ = 17022048.

The previous prime is 51111031. The next prime is 51111089. The reversal of 51111066 is 66011115.

51111066 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 2×51111066² = 5224682135312712, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5350 + ... + 11438.

It is an arithmetic number, because the mean of its divisors is an integer number (6394500).

Almost surely, 2^51111066 is an apocalyptic number.

51111066 is an abundant number, since it is smaller than the sum of its proper divisors (51200934).

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

51111066 is a wasteful number, since it uses less digits than its factorization.

51111066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7493.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 51111066 is about 7149.2003748671. The cubic root of 51111066 is about 371.1119846580. Note that the first 3 decimals are identical.

The spelling of 51111066 in words is "fifty-one million, one hundred eleven thousand, sixty-six".