553997780 has 48 divisors (see below), whose sum is σ = 1387411200. Its totient is φ = 181682688.

The previous prime is 553997779. The next prime is 553997831. The reversal of 553997780 is 87799355.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82805 + ... + 89244.

It is an arithmetic number, because the mean of its divisors is an integer number (28904400).

Almost surely, 2^553997780 is an apocalyptic number.

It is an amenable number.

553997780 is an abundant number, since it is smaller than the sum of its proper divisors (833413420).

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

553997780 is a wasteful number, since it uses less digits than its factorization.

553997780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172088 (or 172086 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 53.

The square root of 553997780 is about 23537.1574324514. The cubic root of 553997780 is about 821.3016111855.

The spelling of 553997780 in words is "five hundred fifty-three million, nine hundred ninety-seven thousand, seven hundred eighty".