1201521524 has 12 divisors (see below), whose sum is σ = 2403043104. Its totient is φ = 514937784.

The previous prime is 1201521493. The next prime is 1201521539. The reversal of 1201521524 is 4251251021.

1201521524 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201521524.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21455714 + ... + 21455769.

It is an arithmetic number, because the mean of its divisors is an integer number (200253592).

Almost surely, 2^1201521524 is an apocalyptic number.

1201521524 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1201521524 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1201521524 is a wasteful number, since it uses less digits than its factorization.

1201521524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42911494 (or 42911492 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1201521524 is about 34662.9705016751. The cubic root of 1201521524 is about 1063.1075074156.

Adding to 1201521524 its reverse (4251251021), we get a palindrome (5452772545).

The spelling of 1201521524 in words is "one billion, two hundred one million, five hundred twenty-one thousand, five hundred twenty-four".