30503149 has 2 divisors, whose sum is σ = 30503150. Its totient is φ = 30503148.

The previous prime is 30503119. The next prime is 30503159. The reversal of 30503149 is 94130503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29106025 + 1397124 = 5395^2 + 1182^2 .

It is a cyclic number.

It is not a de Polignac number, because 30503149 - 2⁷ = 30503021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30503119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15251574 + 15251575.

It is an arithmetic number, because the mean of its divisors is an integer number (15251575).

Almost surely, 2^30503149 is an apocalyptic number.

It is an amenable number.

30503149 is a deficient number, since it is larger than the sum of its proper divisors (1).

30503149 is an equidigital number, since it uses as much as digits as its factorization.

30503149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 30503149 is about 5522.9655982995. The cubic root of 30503149 is about 312.4507408224.

The spelling of 30503149 in words is "thirty million, five hundred three thousand, one hundred forty-nine".