201551215 has 8 divisors (see below), whose sum is σ = 242058240. Its totient is φ = 161109792.

The previous prime is 201551177. The next prime is 201551227. The reversal of 201551215 is 512155102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201551215 - 2²⁵ = 167996783 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9364 + ... + 22153.

It is an arithmetic number, because the mean of its divisors is an integer number (30257280).

Almost surely, 2^201551215 is an apocalyptic number.

201551215 is a deficient number, since it is larger than the sum of its proper divisors (40507025).

201551215 is a wasteful number, since it uses less digits than its factorization.

201551215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32801.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 201551215 is about 14196.8734233985. The cubic root of 201551215 is about 586.3115822519.

The spelling of 201551215 in words is "two hundred one million, five hundred fifty-one thousand, two hundred fifteen".