51448417 has 2 divisors, whose sum is σ = 51448418. Its totient is φ = 51448416.

The previous prime is 51448403. The next prime is 51448433. The reversal of 51448417 is 71484415.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51251281 + 197136 = 7159^2 + 444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51448417 is a prime.

It is a super-2 number, since 2×51448417² = 5293879223611778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51448457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25724208 + 25724209.

It is an arithmetic number, because the mean of its divisors is an integer number (25724209).

Almost surely, 2^51448417 is an apocalyptic number.

It is an amenable number.

51448417 is a deficient number, since it is larger than the sum of its proper divisors (1).

51448417 is an equidigital number, since it uses as much as digits as its factorization.

51448417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 34.

The square root of 51448417 is about 7172.7551889075. The cubic root of 51448417 is about 371.9266846884.

The spelling of 51448417 in words is "fifty-one million, four hundred forty-eight thousand, four hundred seventeen".