4528997550 has 576 divisors, whose sum is σ = 16222961664. Its totient is φ = 912124800.

The previous prime is 4528997533. The next prime is 4528997581. The reversal of 4528997550 is 557998254.

4528997550 is a `hidden beast` number, since 4 + 5 + 2 + 89 + 9 + 7 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 43970799 + ... + 43970901.

It is an arithmetic number, because the mean of its divisors is an integer number (28164864).

Almost surely, 2^4528997550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4528997550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8111480832).

4528997550 is an abundant number, since it is smaller than the sum of its proper divisors (11693964114).

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

4528997550 is a wasteful number, since it uses less digits than its factorization.

4528997550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 54.

The square root of 4528997550 is about 67297.8272308995. The cubic root of 4528997550 is about 1654.5022492816.

The spelling of 4528997550 in words is "four billion, five hundred twenty-eight million, nine hundred ninety-seven thousand, five hundred fifty".