201552281 has 16 divisors (see below), whose sum is σ = 234701184. Its totient is φ = 169513344.

The previous prime is 201552259. The next prime is 201552287. The reversal of 201552281 is 182255102.

It is not a de Polignac number, because 201552281 - 2¹⁸ = 201290137 is a prime.

It is a super-2 number, since 2×201552281² = 81246643952605922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201552281.

It is not an unprimeable number, because it can be changed into a prime (201552287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146111 + ... + 147483.

It is an arithmetic number, because the mean of its divisors is an integer number (14668824).

Almost surely, 2^201552281 is an apocalyptic number.

It is an amenable number.

201552281 is a deficient number, since it is larger than the sum of its proper divisors (33148903).

201552281 is a wasteful number, since it uses less digits than its factorization.

201552281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 201552281 is about 14196.9109668266. The cubic root of 201552281 is about 586.3126159132.

The spelling of 201552281 in words is "two hundred one million, five hundred fifty-two thousand, two hundred eighty-one".