51032771 has 4 divisors (see below), whose sum is σ = 51130872. Its totient is φ = 50934672.

The previous prime is 51032749. The next prime is 51032809. The reversal of 51032771 is 17723015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51032771 - 2¹⁸ = 50770627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51032771.

It is not an unprimeable number, because it can be changed into a prime (51032711) 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, 48266 + ... + 49311.

It is an arithmetic number, because the mean of its divisors is an integer number (12782718).

Almost surely, 2^51032771 is an apocalyptic number.

51032771 is a deficient number, since it is larger than the sum of its proper divisors (98101).

51032771 is an equidigital number, since it uses as much as digits as its factorization.

51032771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98100.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 51032771 is about 7143.7224890109. The cubic root of 51032771 is about 370.9223906070.

Adding to 51032771 its reverse (17723015), we get a palindrome (68755786).

The spelling of 51032771 in words is "fifty-one million, thirty-two thousand, seven hundred seventy-one".