6541521232 has 10 divisors (see below), whose sum is σ = 12674197418. Its totient is φ = 3270760608.

The previous prime is 6541521199. The next prime is 6541521253. The reversal of 6541521232 is 2321251456.

It can be written as a sum of positive squares in only one way, i.e., 3299813136 + 3241708096 = 57444^2 + 56936^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6541521194 and 6541521203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204422523 + ... + 204422554.

Almost surely, 2^6541521232 is an apocalyptic number.

It is an amenable number.

6541521232 is a deficient number, since it is larger than the sum of its proper divisors (6132676186).

6541521232 is a wasteful number, since it uses less digits than its factorization.

6541521232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408845085 (or 408845079 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 6541521232 is about 80879.6713148613. The cubic root of 6541521232 is about 1870.2209536167.

Adding to 6541521232 its reverse (2321251456), we get a palindrome (8862772688).

The spelling of 6541521232 in words is "six billion, five hundred forty-one million, five hundred twenty-one thousand, two hundred thirty-two".