51448931 has 2 divisors, whose sum is σ = 51448932. Its totient is φ = 51448930.

The previous prime is 51448913. The next prime is 51448937. The reversal of 51448931 is 13984415.

Together with previous prime (51448913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51448931 - 2¹⁴ = 51432547 is a prime.

It is a super-2 number, since 2×51448931² = 5293985002085522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51448891 and 51448900.

It is not a weakly prime, because it can be changed into another prime (51448937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25724465 + 25724466.

It is an arithmetic number, because the mean of its divisors is an integer number (25724466).

Almost surely, 2^51448931 is an apocalyptic number.

51448931 is a deficient number, since it is larger than the sum of its proper divisors (1).

51448931 is an equidigital number, since it uses as much as digits as its factorization.

51448931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 51448931 is about 7172.7910188434. The cubic root of 51448931 is about 371.9279232731.

The spelling of 51448931 in words is "fifty-one million, four hundred forty-eight thousand, nine hundred thirty-one".