215152829 has 4 divisors (see below), whose sum is σ = 215302560. Its totient is φ = 215003100.

The previous prime is 215152823. The next prime is 215152843. The reversal of 215152829 is 928251512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 215152829 - 2⁴ = 215152813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215152823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72689 + ... + 75590.

It is an arithmetic number, because the mean of its divisors is an integer number (53825640).

Almost surely, 2^215152829 is an apocalyptic number.

It is an amenable number.

215152829 is a deficient number, since it is larger than the sum of its proper divisors (149731).

215152829 is a wasteful number, since it uses less digits than its factorization.

215152829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149730.

The product of its digits is 14400, while the sum is 35.

The square root of 215152829 is about 14668.0887984768. The cubic root of 215152829 is about 599.2145546487.

The spelling of 215152829 in words is "two hundred fifteen million, one hundred fifty-two thousand, eight hundred twenty-nine".