215152013 has 4 divisors (see below), whose sum is σ = 216472128. Its totient is φ = 213831900.

The previous prime is 215151973. The next prime is 215152031. The reversal of 215152013 is 310251512.

It is a happy number.

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 215152013 - 2²⁰ = 214103437 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 (215152033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659813 + ... + 660138.

It is an arithmetic number, because the mean of its divisors is an integer number (54118032).

Almost surely, 2^215152013 is an apocalyptic number.

It is an amenable number.

215152013 is a deficient number, since it is larger than the sum of its proper divisors (1320115).

215152013 is a wasteful number, since it uses less digits than its factorization.

215152013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320114.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 215152013 is about 14668.0609829657. The cubic root of 215152013 is about 599.2137971102.

The spelling of 215152013 in words is "two hundred fifteen million, one hundred fifty-two thousand, thirteen".