51611766 has 8 divisors (see below), whose sum is σ = 103223544. Its totient is φ = 17203920.

The previous prime is 51611761. The next prime is 51611767. The reversal of 51611766 is 66711615.

It is a sphenic number, since it is the product of 3 distinct primes.

51611766 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51611761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4300975 + ... + 4300986.

It is an arithmetic number, because the mean of its divisors is an integer number (12902943).

Almost surely, 2^51611766 is an apocalyptic number.

51611766 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51611766 is a wasteful number, since it uses less digits than its factorization.

51611766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8601966.

The product of its digits is 7560, while the sum is 33.

The square root of 51611766 is about 7184.1329330685. The cubic root of 51611766 is about 372.3198919096.

The spelling of 51611766 in words is "fifty-one million, six hundred eleven thousand, seven hundred sixty-six".