552761820 has 216 divisors, whose sum is σ = 1885652496. Its totient is φ = 135862272.

The previous prime is 552761819. The next prime is 552761827. The reversal of 552761820 is 28167255.

It is a happy number.

552761820 is a `hidden beast` number, since 552 + 76 + 18 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552761827) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 821004 + ... + 821676.

Almost surely, 2^552761820 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 552761820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942826248).

552761820 is an abundant number, since it is smaller than the sum of its proper divisors (1332890676).

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

552761820 is a wasteful number, since it uses less digits than its factorization.

552761820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 696 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 552761820 is about 23510.8872652650. The cubic root of 552761820 is about 820.6903862549.

The spelling of 552761820 in words is "five hundred fifty-two million, seven hundred sixty-one thousand, eight hundred twenty".