100515229 has 2 divisors, whose sum is σ = 100515230. Its totient is φ = 100515228.

The previous prime is 100515223. The next prime is 100515257. The reversal of 100515229 is 922515001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57350329 + 43164900 = 7573^2 + 6570^2 .

It is an emirp because it is prime and its reverse (922515001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100515229 - 2¹³ = 100507037 is a prime.

It is a super-2 number, since 2×100515229² = 20206622521844882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100515223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50257614 + 50257615.

It is an arithmetic number, because the mean of its divisors is an integer number (50257615).

Almost surely, 2^100515229 is an apocalyptic number.

It is an amenable number.

100515229 is a deficient number, since it is larger than the sum of its proper divisors (1).

100515229 is an equidigital number, since it uses as much as digits as its factorization.

100515229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 100515229 is about 10025.7283525936. The cubic root of 100515229 is about 464.9546785905.

The spelling of 100515229 in words is "one hundred million, five hundred fifteen thousand, two hundred twenty-nine".