361521521 has 8 divisors (see below), whose sum is σ = 380977344. Its totient is φ = 342377200.

The previous prime is 361521431. The next prime is 361521551. The reversal of 361521521 is 125125163.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361521521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361521551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75491 + ... + 80136.

It is an arithmetic number, because the mean of its divisors is an integer number (47622168).

Almost surely, 2^361521521 is an apocalyptic number.

It is an amenable number.

361521521 is a deficient number, since it is larger than the sum of its proper divisors (19455823).

361521521 is a wasteful number, since it uses less digits than its factorization.

361521521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155751.

The product of its digits is 1800, while the sum is 26.

The square root of 361521521 is about 19013.7192837172. The cubic root of 361521521 is about 712.3794537418.

Adding to 361521521 its reverse (125125163), we get a palindrome (486646684).

It can be divided in two parts, 36152 and 1521, that added together give a palindrome (37673).

The spelling of 361521521 in words is "three hundred sixty-one million, five hundred twenty-one thousand, five hundred twenty-one".