51984811 has 4 divisors (see below), whose sum is σ = 52569000. Its totient is φ = 51400624.

The previous prime is 51984797. The next prime is 51984839. The reversal of 51984811 is 11848915.

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 51984811 - 2⁷ = 51984683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51987811) 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, 291961 + ... + 292138.

It is an arithmetic number, because the mean of its divisors is an integer number (13142250).

Almost surely, 2^51984811 is an apocalyptic number.

51984811 is a deficient number, since it is larger than the sum of its proper divisors (584189).

51984811 is an equidigital number, since it uses as much as digits as its factorization.

51984811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584188.

The product of its digits is 11520, while the sum is 37.

The square root of 51984811 is about 7210.0493063501. The cubic root of 51984811 is about 373.2147704043.

The spelling of 51984811 in words is "fifty-one million, nine hundred eighty-four thousand, eight hundred eleven".