210135552 has 80 divisors (see below), whose sum is σ = 610755552. Its totient is φ = 63672320.

The previous prime is 210135503. The next prime is 210135557. The reversal of 210135552 is 255531012.

It is a happy number.

It is a hoax number, since the sum of its digits (24) 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 (24).

It is not an unprimeable number, because it can be changed into a prime (210135557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10678 + ... + 23114.

Almost surely, 2^210135552 is an apocalyptic number.

210135552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210135552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305377776).

210135552 is an abundant number, since it is smaller than the sum of its proper divisors (400620000).

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

210135552 is a wasteful number, since it uses less digits than its factorization.

210135552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12469 (or 12453 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 210135552 is about 14496.0529800356. The cubic root of 210135552 is about 594.5200583259.

Adding to 210135552 its reverse (255531012), we get a palindrome (465666564).

It can be divided in two parts, 21013 and 5552, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 210135552 in words is "two hundred ten million, one hundred thirty-five thousand, five hundred fifty-two".