545657472 has 192 divisors, whose sum is σ = 1664076960. Its totient is φ = 177914880.

The previous prime is 545657471. The next prime is 545657473. The reversal of 545657472 is 274756545.

545657472 is a `hidden beast` number, since 5 + 4 + 5 + 6 + 574 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (545657471) and next prime (545657473).

It is a tau number, because it is divible by the number of its divisors (192).

It is not an unprimeable number, because it can be changed into a prime (545657471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1648347 + ... + 1648677.

Almost surely, 2^545657472 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 545657472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (832038480).

545657472 is an abundant number, since it is smaller than the sum of its proper divisors (1118419488).

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

545657472 is an equidigital number, since it uses as much as digits as its factorization.

545657472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 389 counting only the distinct ones).

The product of its digits is 1176000, while the sum is 45.

The square root of 545657472 is about 23359.3123186450. The cubic root of 545657472 is about 817.1592519805.

The spelling of 545657472 in words is "five hundred forty-five million, six hundred fifty-seven thousand, four hundred seventy-two".