501099552 has 72 divisors (see below), whose sum is σ = 1442239344. Its totient is φ = 165012864.

The previous prime is 501099527. The next prime is 501099583. The reversal of 501099552 is 255990105.

501099552 is a `hidden beast` number, since 5 + 0 + 10 + 99 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×501099552² = 502201522029201408, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13423 + ... + 34385.

It is an arithmetic number, because the mean of its divisors is an integer number (20031102).

Almost surely, 2^501099552 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 501099552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (721119672).

501099552 is an abundant number, since it is smaller than the sum of its proper divisors (941139792).

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

501099552 is a wasteful number, since it uses less digits than its factorization.

501099552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21062 (or 21051 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 36.

The square root of 501099552 is about 22385.2530028142. The cubic root of 501099552 is about 794.2819100180.

The spelling of 501099552 in words is "five hundred one million, ninety-nine thousand, five hundred fifty-two".