631250051 has 2 divisors, whose sum is σ = 631250052. Its totient is φ = 631250050.

The previous prime is 631250003. The next prime is 631250107. The reversal of 631250051 is 150052136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631250051 - 2¹⁴ = 631233667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 631249999 and 631250026.

It is not a weakly prime, because it can be changed into another prime (631250251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315625025 + 315625026.

It is an arithmetic number, because the mean of its divisors is an integer number (315625026).

Almost surely, 2^631250051 is an apocalyptic number.

631250051 is a deficient number, since it is larger than the sum of its proper divisors (1).

631250051 is an equidigital number, since it uses as much as digits as its factorization.

631250051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 631250051 is about 25124.6900677401. The cubic root of 631250051 is about 857.8285089128.

The spelling of 631250051 in words is "six hundred thirty-one million, two hundred fifty thousand, fifty-one".