553871820 has 96 divisors (see below), whose sum is σ = 1599510528. Its totient is φ = 143119872.

The previous prime is 553871819. The next prime is 553871821. The reversal of 553871820 is 28178355.

It is an interprime number because it is at equal distance from previous prime (553871819) and next prime (553871821).

It is a super-2 number, since 2×553871820² = 613547985980224800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (553871821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 352677 + ... + 354243.

It is an arithmetic number, because the mean of its divisors is an integer number (16661568).

Almost surely, 2^553871820 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 553871820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (799755264).

553871820 is an abundant number, since it is smaller than the sum of its proper divisors (1045638708).

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

553871820 is a wasteful number, since it uses less digits than its factorization.

553871820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 553871820 is about 23534.4815111784. The cubic root of 553871820 is about 821.2393612415.

The spelling of 553871820 in words is "five hundred fifty-three million, eight hundred seventy-one thousand, eight hundred twenty".