51400001 has 2 divisors, whose sum is σ = 51400002. Its totient is φ = 51400000.

The previous prime is 51399979. The next prime is 51400039. The reversal of 51400001 is 10000415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48163600 + 3236401 = 6940^2 + 1799^2 .

It is a cyclic number.

It is not a de Polignac number, because 51400001 - 2¹⁴ = 51383617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51400051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25700000 + 25700001.

It is an arithmetic number, because the mean of its divisors is an integer number (25700001).

Almost surely, 2^51400001 is an apocalyptic number.

It is an amenable number.

51400001 is a deficient number, since it is larger than the sum of its proper divisors (1).

51400001 is an equidigital number, since it uses as much as digits as its factorization.

51400001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 51400001 is about 7169.3794013150. The cubic root of 51400001 is about 371.8099797440.

Adding to 51400001 its reverse (10000415), we get a palindrome (61400416).

The spelling of 51400001 in words is "fifty-one million, four hundred thousand, one".