455997780 has 72 divisors (see below), whose sum is σ = 1580796672. Its totient is φ = 104227776.

The previous prime is 455997761. The next prime is 455997791. The reversal of 455997780 is 87799554.

455997780 is a `hidden beast` number, since 4 + 559 + 9 + 7 + 7 + 80 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179692 + ... + 182211.

Almost surely, 2^455997780 is an apocalyptic number.

It is an amenable number.

455997780 is an abundant number, since it is smaller than the sum of its proper divisors (1124798892).

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

455997780 is a wasteful number, since it uses less digits than its factorization.

455997780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361925 (or 361920 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 54.

The square root of 455997780 is about 21354.1045234868. The cubic root of 455997780 is about 769.6989771784.

The spelling of 455997780 in words is "four hundred fifty-five million, nine hundred ninety-seven thousand, seven hundred eighty".