999751201 has 2 divisors, whose sum is σ = 999751202. Its totient is φ = 999751200.

The previous prime is 999751157. The next prime is 999751217. The reversal of 999751201 is 102157999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 998496801 + 1254400 = 31599^2 + 1120^2 .

It is a cyclic number.

It is not a de Polignac number, because 999751201 - 2¹⁹ = 999226913 is a prime.

It is not a weakly prime, because it can be changed into another prime (999751261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499875600 + 499875601.

It is an arithmetic number, because the mean of its divisors is an integer number (499875601).

Almost surely, 2^999751201 is an apocalyptic number.

It is an amenable number.

999751201 is a deficient number, since it is larger than the sum of its proper divisors (1).

999751201 is an equidigital number, since it uses as much as digits as its factorization.

999751201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 43.

The square root of 999751201 is about 31618.8424993705. The cubic root of 999751201 is about 999.9170601212.

The spelling of 999751201 in words is "nine hundred ninety-nine million, seven hundred fifty-one thousand, two hundred one".