30051997 has 2 divisors, whose sum is σ = 30051998. Its totient is φ = 30051996.

The previous prime is 30051943. The next prime is 30052021. The reversal of 30051997 is 79915003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20602521 + 9449476 = 4539^2 + 3074^2 .

It is a cyclic number.

It is not a de Polignac number, because 30051997 - 2¹⁹ = 29527709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30051907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15025998 + 15025999.

It is an arithmetic number, because the mean of its divisors is an integer number (15025999).

Almost surely, 2^30051997 is an apocalyptic number.

It is an amenable number.

30051997 is a deficient number, since it is larger than the sum of its proper divisors (1).

30051997 is an equidigital number, since it uses as much as digits as its factorization.

30051997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 30051997 is about 5481.9701750374. The cubic root of 30051997 is about 310.9026656110.

The spelling of 30051997 in words is "thirty million, fifty-one thousand, nine hundred ninety-seven".