30750053 has 2 divisors, whose sum is σ = 30750054. Its totient is φ = 30750052.

The previous prime is 30750019. The next prime is 30750073. The reversal of 30750053 is 35005703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22118209 + 8631844 = 4703^2 + 2938^2 .

It is a cyclic number.

It is not a de Polignac number, because 30750053 - 2⁶ = 30749989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30750073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15375026 + 15375027.

It is an arithmetic number, because the mean of its divisors is an integer number (15375027).

Almost surely, 2^30750053 is an apocalyptic number.

It is an amenable number.

30750053 is a deficient number, since it is larger than the sum of its proper divisors (1).

30750053 is an equidigital number, since it uses as much as digits as its factorization.

30750053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1575, while the sum is 23.

The square root of 30750053 is about 5545.2730320517. The cubic root of 30750053 is about 313.2915077967.

Adding to 30750053 its reverse (35005703), we get a palindrome (65755756).

The spelling of 30750053 in words is "thirty million, seven hundred fifty thousand, fifty-three".