201513540 has 24 divisors (see below), whose sum is σ = 564238080. Its totient is φ = 53736928.

The previous prime is 201513539. The next prime is 201513583. The reversal of 201513540 is 45315102.

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, 1679220 + ... + 1679339.

It is an arithmetic number, because the mean of its divisors is an integer number (23509920).

Almost surely, 2^201513540 is an apocalyptic number.

201513540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201513540 is an abundant number, since it is smaller than the sum of its proper divisors (362724540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201513540 is a wasteful number, since it uses less digits than its factorization.

201513540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358571 (or 3358569 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 201513540 is about 14195.5464847254. The cubic root of 201513540 is about 586.2750478400.

Adding to 201513540 its reverse (45315102), we get a palindrome (246828642).

The spelling of 201513540 in words is "two hundred one million, five hundred thirteen thousand, five hundred forty".