30500450521 has 2 divisors, whose sum is σ = 30500450522. Its totient is φ = 30500450520.

The previous prime is 30500450479. The next prime is 30500450557. The reversal of 30500450521 is 12505400503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23858200521 + 6642250000 = 154461^2 + 81500^2 .

It is a cyclic number.

It is not a de Polignac number, because 30500450521 - 2⁹ = 30500450009 is a prime.

It is not a weakly prime, because it can be changed into another prime (30500450021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15250225260 + 15250225261.

It is an arithmetic number, because the mean of its divisors is an integer number (15250225261).

Almost surely, 2^30500450521 is an apocalyptic number.

It is an amenable number.

30500450521 is a deficient number, since it is larger than the sum of its proper divisors (1).

30500450521 is an equidigital number, since it uses as much as digits as its factorization.

30500450521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 25.

The spelling of 30500450521 in words is "thirty billion, five hundred million, four hundred fifty thousand, five hundred twenty-one".