5451997536 has 72 divisors (see below), whose sum is σ = 15649104744. Its totient is φ = 1800337920.

The previous prime is 5451997513. The next prime is 5451997553. The reversal of 5451997536 is 6357991545.

5451997536 is a `hidden beast` number, since 5 + 4 + 5 + 19 + 97 + 536 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57645 + ... + 119276.

It is an arithmetic number, because the mean of its divisors is an integer number (217348677).

Almost surely, 2^5451997536 is an apocalyptic number.

It is an amenable number.

5451997536 is an abundant number, since it is smaller than the sum of its proper divisors (10197107208).

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

5451997536 is a wasteful number, since it uses less digits than its factorization.

5451997536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177044 (or 177033 counting only the distinct ones).

The product of its digits is 5103000, while the sum is 54.

The square root of 5451997536 is about 73837.6430826445. The cubic root of 5451997536 is about 1760.0238392088.

The spelling of 5451997536 in words is "five billion, four hundred fifty-one million, nine hundred ninety-seven thousand, five hundred thirty-six".