6501557200 has 120 divisors (see below), whose sum is σ = 16338168576. Its totient is φ = 2481600000.

The previous prime is 6501557191. The next prime is 6501557201. The reversal of 6501557200 is 27551056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6501557201) 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, 6908730 + ... + 6909670.

Almost surely, 2^6501557200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6501557200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8169084288).

6501557200 is an abundant number, since it is smaller than the sum of its proper divisors (9836611376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6501557200 is a wasteful number, since it uses less digits than its factorization.

6501557200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733 (or 1722 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 6501557200 is about 80632.2342490892. The cubic root of 6501557200 is about 1866.4045989801.

The spelling of 6501557200 in words is "six billion, five hundred one million, five hundred fifty-seven thousand, two hundred".