51765066 has 48 divisors (see below), whose sum is σ = 115689600. Its totient is φ = 16720704.

The previous prime is 51765059. The next prime is 51765067. The reversal of 51765066 is 66056715.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51765066.

It is not an unprimeable number, because it can be changed into a prime (51765067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83590 + ... + 84206.

It is an arithmetic number, because the mean of its divisors is an integer number (2410200).

Almost surely, 2^51765066 is an apocalyptic number.

51765066 is an abundant number, since it is smaller than the sum of its proper divisors (63924534).

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

51765066 is a wasteful number, since it uses less digits than its factorization.

51765066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 51765066 is about 7194.7943681526. The cubic root of 51765066 is about 372.6881556230.

The spelling of 51765066 in words is "fifty-one million, seven hundred sixty-five thousand, sixty-six".