51375001 has 2 divisors, whose sum is σ = 51375002. Its totient is φ = 51375000.

The previous prime is 51374959. The next prime is 51375013. The reversal of 51375001 is 10057315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35093776 + 16281225 = 5924^2 + 4035^2 .

It is a cyclic number.

It is not a de Polignac number, because 51375001 - 2¹⁹ = 50850713 is a prime.

It is not a weakly prime, because it can be changed into another prime (51375041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25687500 + 25687501.

It is an arithmetic number, because the mean of its divisors is an integer number (25687501).

Almost surely, 2^51375001 is an apocalyptic number.

It is an amenable number.

51375001 is a deficient number, since it is larger than the sum of its proper divisors (1).

51375001 is an equidigital number, since it uses as much as digits as its factorization.

51375001 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 51375001 is about 7167.6356631737. The cubic root of 51375001 is about 371.7496894928.

The spelling of 51375001 in words is "fifty-one million, three hundred seventy-five thousand, one".