51974081 has 2 divisors, whose sum is σ = 51974082. Its totient is φ = 51974080.

The previous prime is 51974077. The next prime is 51974093. The reversal of 51974081 is 18047915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46117681 + 5856400 = 6791^2 + 2420^2 .

It is a cyclic number.

It is not a de Polignac number, because 51974081 - 2² = 51974077 is a prime.

It is a super-2 number, since 2×51974081² = 5402610191589122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51974071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25987040 + 25987041.

It is an arithmetic number, because the mean of its divisors is an integer number (25987041).

Almost surely, 2^51974081 is an apocalyptic number.

It is an amenable number.

51974081 is a deficient number, since it is larger than the sum of its proper divisors (1).

51974081 is an equidigital number, since it uses as much as digits as its factorization.

51974081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 51974081 is about 7209.3051676288. The cubic root of 51974081 is about 373.1890906595.

The spelling of 51974081 in words is "fifty-one million, nine hundred seventy-four thousand, eighty-one".