51974811 has 48 divisors (see below), whose sum is σ = 90649600. Its totient is φ = 28826928.

The previous prime is 51974801. The next prime is 51974837. The reversal of 51974811 is 11847915.

It is not a de Polignac number, because 51974811 - 2¹¹ = 51972763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51974801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 657870 + ... + 657948.

Almost surely, 2^51974811 is an apocalyptic number.

51974811 is a deficient number, since it is larger than the sum of its proper divisors (38674789).

51974811 is an equidigital number, since it uses as much as digits as its factorization.

51974811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 148 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 51974811 is about 7209.3557964634. The cubic root of 51974811 is about 373.1908378557.

The spelling of 51974811 in words is "fifty-one million, nine hundred seventy-four thousand, eight hundred eleven".