30040057 has 2 divisors, whose sum is σ = 30040058. Its totient is φ = 30040056.

The previous prime is 30040013. The next prime is 30040063. The reversal of 30040057 is 75004003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19678096 + 10361961 = 4436^2 + 3219^2 .

It is a cyclic number.

It is not a de Polignac number, because 30040057 - 2²³ = 21651449 is a prime.

It is not a weakly prime, because it can be changed into another prime (30040067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15020028 + 15020029.

It is an arithmetic number, because the mean of its divisors is an integer number (15020029).

Almost surely, 2^30040057 is an apocalyptic number.

It is an amenable number.

30040057 is a deficient number, since it is larger than the sum of its proper divisors (1).

30040057 is an equidigital number, since it uses as much as digits as its factorization.

30040057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 30040057 is about 5480.8810423143. The cubic root of 30040057 is about 310.8614851024.

The spelling of 30040057 in words is "thirty million, forty thousand, fifty-seven".