51051401 has 2 divisors, whose sum is σ = 51051402. Its totient is φ = 51051400.

The previous prime is 51051383. The next prime is 51051409. The reversal of 51051401 is 10415015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49843600 + 1207801 = 7060^2 + 1099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51051401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51051401.

It is not a weakly prime, because it can be changed into another prime (51051409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25525700 + 25525701.

It is an arithmetic number, because the mean of its divisors is an integer number (25525701).

Almost surely, 2^51051401 is an apocalyptic number.

It is an amenable number.

51051401 is a deficient number, since it is larger than the sum of its proper divisors (1).

51051401 is an equidigital number, since it uses as much as digits as its factorization.

51051401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 51051401 is about 7145.0263120579. The cubic root of 51051401 is about 370.9675213683.

Adding to 51051401 its reverse (10415015), we get a palindrome (61466416).

The spelling of 51051401 in words is "fifty-one million, fifty-one thousand, four hundred one".