999751157 has 2 divisors, whose sum is σ = 999751158. Its totient is φ = 999751156.

The previous prime is 999751121. The next prime is 999751201. The reversal of 999751157 is 751157999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 702568036 + 297183121 = 26506^2 + 17239^2 .

It is an emirp because it is prime and its reverse (751157999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999751157 - 2¹² = 999747061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999751099 and 999751108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999751057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499875578 + 499875579.

It is an arithmetic number, because the mean of its divisors is an integer number (499875579).

Almost surely, 2^999751157 is an apocalyptic number.

It is an amenable number.

999751157 is a deficient number, since it is larger than the sum of its proper divisors (1).

999751157 is an equidigital number, since it uses as much as digits as its factorization.

999751157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 893025, while the sum is 53.

The square root of 999751157 is about 31618.8418035829. The cubic root of 999751157 is about 999.9170454521.

The spelling of 999751157 in words is "nine hundred ninety-nine million, seven hundred fifty-one thousand, one hundred fifty-seven".