51508001 has 2 divisors, whose sum is σ = 51508002. Its totient is φ = 51508000.

The previous prime is 51507947. The next prime is 51508007. The reversal of 51508001 is 10080515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51051025 + 456976 = 7145^2 + 676^2 .

It is a cyclic number.

It is not a de Polignac number, because 51508001 - 2¹⁰ = 51506977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51508007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25754000 + 25754001.

It is an arithmetic number, because the mean of its divisors is an integer number (25754001).

Almost surely, 2^51508001 is an apocalyptic number.

It is an amenable number.

51508001 is a deficient number, since it is larger than the sum of its proper divisors (1).

51508001 is an equidigital number, since it uses as much as digits as its factorization.

51508001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 51508001 is about 7176.9074816386. The cubic root of 51508001 is about 372.0702092210.

Adding to 51508001 its reverse (10080515), we get a palindrome (61588516).

The spelling of 51508001 in words is "fifty-one million, five hundred eight thousand, one".