51065612 has 24 divisors (see below), whose sum is σ = 100425696. Its totient is φ = 22543488.

The previous prime is 51065611. The next prime is 51065629. The reversal of 51065612 is 21656015.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (51065611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20153 + ... + 22544.

It is an arithmetic number, because the mean of its divisors is an integer number (4184404).

Almost surely, 2^51065612 is an apocalyptic number.

51065612 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51065612 is a deficient number, since it is larger than the sum of its proper divisors (49360084).

51065612 is a wasteful number, since it uses less digits than its factorization.

51065612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42737 (or 42735 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 51065612 is about 7146.0207108572. The cubic root of 51065612 is about 371.0019398188.

The spelling of 51065612 in words is "fifty-one million, sixty-five thousand, six hundred twelve".