201481564 has 12 divisors (see below), whose sum is σ = 367923024. Its totient is φ = 96360704.

The previous prime is 201481559. The next prime is 201481573. The reversal of 201481564 is 465184102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094917 + ... + 1095100.

It is an arithmetic number, because the mean of its divisors is an integer number (30660252).

Almost surely, 2^201481564 is an apocalyptic number.

It is an amenable number.

201481564 is a deficient number, since it is larger than the sum of its proper divisors (166441460).

201481564 is a wasteful number, since it uses less digits than its factorization.

201481564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190044 (or 2190042 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 201481564 is about 14194.4201713208. The cubic root of 201481564 is about 586.2440363215.

It can be divided in two parts, 20148 and 1564, that added together give a palindrome (21712).

The spelling of 201481564 in words is "two hundred one million, four hundred eighty-one thousand, five hundred sixty-four".