201615256 has 16 divisors (see below), whose sum is σ = 378675000. Its totient is φ = 100635264.

The previous prime is 201615241. The next prime is 201615283. The reversal of 201615256 is 652516102.

It is a super-2 number, since 2×201615256² = 81297422903891072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16506 + ... + 25993.

Almost surely, 2^201615256 is an apocalyptic number.

It is an amenable number.

201615256 is a deficient number, since it is larger than the sum of its proper divisors (177059744).

201615256 is a wasteful number, since it uses less digits than its factorization.

201615256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43098 (or 43094 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 201615256 is about 14199.1287056636. The cubic root of 201615256 is about 586.3736740035.

The spelling of 201615256 in words is "two hundred one million, six hundred fifteen thousand, two hundred fifty-six".