6241621545 has 24 divisors (see below), whose sum is σ = 10967019336. Its totient is φ = 3283262208.

The previous prime is 6241621523. The next prime is 6241621549. The reversal of 6241621545 is 5451261426.

6241621545 is a `hidden beast` number, since 6 + 24 + 1 + 621 + 5 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 800493849 + 5441127696 = 28293^2 + 73764^2 .

It is not a de Polignac number, because 6241621545 - 2⁵ = 6241621513 is a prime.

It is a super-2 number, since 2×6241621545² = 77915679022016374050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6241621549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 946734 + ... + 953303.

It is an arithmetic number, because the mean of its divisors is an integer number (456959139).

Almost surely, 2^6241621545 is an apocalyptic number.

It is an amenable number.

6241621545 is a deficient number, since it is larger than the sum of its proper divisors (4725397791).

6241621545 is a wasteful number, since it uses less digits than its factorization.

6241621545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900121 (or 1900118 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 6241621545 is about 79003.9337311757. The cubic root of 6241621545 is about 1841.1922747833.

The spelling of 6241621545 in words is "six billion, two hundred forty-one million, six hundred twenty-one thousand, five hundred forty-five".