51005371 has 2 divisors, whose sum is σ = 51005372. Its totient is φ = 51005370.

The previous prime is 51005309. The next prime is 51005393. The reversal of 51005371 is 17350015.

It is an a-pointer prime, because the next prime (51005393) can be obtained adding 51005371 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51005371 - 2²¹ = 48908219 is a prime.

It is not a weakly prime, because it can be changed into another prime (51005771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25502685 + 25502686.

It is an arithmetic number, because the mean of its divisors is an integer number (25502686).

Almost surely, 2^51005371 is an apocalyptic number.

51005371 is a deficient number, since it is larger than the sum of its proper divisors (1).

51005371 is an equidigital number, since it uses as much as digits as its factorization.

51005371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 51005371 is about 7141.8044638593. The cubic root of 51005371 is about 370.8559947548.

Adding to 51005371 its reverse (17350015), we get a palindrome (68355386).

The spelling of 51005371 in words is "fifty-one million, five thousand, three hundred seventy-one".