6215532541 has 4 divisors (see below), whose sum is σ = 6215724252. Its totient is φ = 6215340832.

The previous prime is 6215532539. The next prime is 6215532559. The reversal of 6215532541 is 1452355126.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4273367641 + 1942164900 = 65371^2 + 44070^2 .

It is a cyclic number.

It is not a de Polignac number, because 6215532541 - 2¹ = 6215532539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6215532497 and 6215532506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6215532041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33856 + ... + 116521.

It is an arithmetic number, because the mean of its divisors is an integer number (1553931063).

Almost surely, 2^6215532541 is an apocalyptic number.

It is an amenable number.

6215532541 is a deficient number, since it is larger than the sum of its proper divisors (191711).

6215532541 is a wasteful number, since it uses less digits than its factorization.

6215532541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191710.

The product of its digits is 36000, while the sum is 34.

The square root of 6215532541 is about 78838.6487771068. The cubic root of 6215532541 is about 1838.6233934859.

Adding to 6215532541 its reverse (1452355126), we get a palindrome (7667887667).

It can be divided in two parts, 6215 and 532541, that added together give a square (538756 = 734²).

The spelling of 6215532541 in words is "six billion, two hundred fifteen million, five hundred thirty-two thousand, five hundred forty-one".