30750001 has 2 divisors, whose sum is σ = 30750002. Its totient is φ = 30750000.

The previous prime is 30749993. The next prime is 30750019. The reversal of 30750001 is 10005703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24990001 + 5760000 = 4999^2 + 2400^2 .

It is an emirp because it is prime and its reverse (10005703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30750001 - 2³ = 30749993 is a prime.

It is not a weakly prime, because it can be changed into another prime (30750091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15375000 + 15375001.

It is an arithmetic number, because the mean of its divisors is an integer number (15375001).

Almost surely, 2^30750001 is an apocalyptic number.

It is an amenable number.

30750001 is a deficient number, since it is larger than the sum of its proper divisors (1).

30750001 is an equidigital number, since it uses as much as digits as its factorization.

30750001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105, while the sum is 16.

The square root of 30750001 is about 5545.2683433717. The cubic root of 30750001 is about 313.2913311990.

Adding to 30750001 its reverse (10005703), we get a palindrome (40755704).

The spelling of 30750001 in words is "thirty million, seven hundred fifty thousand, one".