6545620501 has 8 divisors (see below), whose sum is σ = 7490545344. Its totient is φ = 5603154720.

The previous prime is 6545620493. The next prime is 6545620507. The reversal of 6545620501 is 1050265456.

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

It is a cyclic number.

It is not a de Polignac number, because 6545620501 - 2³ = 6545620493 is a prime.

It is a super-2 number, since 2×6545620501² = 85690295486222982002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6545620507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609055 + ... + 619708.

It is an arithmetic number, because the mean of its divisors is an integer number (936318168).

Almost surely, 2^6545620501 is an apocalyptic number.

It is an amenable number.

6545620501 is a deficient number, since it is larger than the sum of its proper divisors (944924843).

6545620501 is a wasteful number, since it uses less digits than its factorization.

6545620501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229531.

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

The square root of 6545620501 is about 80905.0091218090. The cubic root of 6545620501 is about 1870.6115323848.

Adding to 6545620501 its reverse (1050265456), we get a palindrome (7595885957).

The spelling of 6545620501 in words is "six billion, five hundred forty-five million, six hundred twenty thousand, five hundred one".