51452881 has 2 divisors, whose sum is σ = 51452882. Its totient is φ = 51452880.

The previous prime is 51452879. The next prime is 51452911. The reversal of 51452881 is 18825415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41473600 + 9979281 = 6440^2 + 3159^2 .

It is a cyclic number.

It is not a de Polignac number, because 51452881 - 2¹ = 51452879 is a prime.

It is a super-2 number, since 2×51452881² = 5294797926400322, which contains 22 as substring.

Together with 51452879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51452801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25726440 + 25726441.

It is an arithmetic number, because the mean of its divisors is an integer number (25726441).

Almost surely, 2^51452881 is an apocalyptic number.

It is an amenable number.

51452881 is a deficient number, since it is larger than the sum of its proper divisors (1).

51452881 is an equidigital number, since it uses as much as digits as its factorization.

51452881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12800, while the sum is 34.

The square root of 51452881 is about 7173.0663596540. The cubic root of 51452881 is about 371.9374413051.

The spelling of 51452881 in words is "fifty-one million, four hundred fifty-two thousand, eight hundred eighty-one".