211425552 has 240 divisors, whose sum is σ = 682456320. Its totient is φ = 62954496.

The previous prime is 211425551. The next prime is 211425563. The reversal of 211425552 is 255524112.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211425551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2375524 + ... + 2375612.

It is an arithmetic number, because the mean of its divisors is an integer number (2843568).

Almost surely, 2^211425552 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 211425552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341228160).

211425552 is an abundant number, since it is smaller than the sum of its proper divisors (471030768).

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

211425552 is a wasteful number, since it uses less digits than its factorization.

211425552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 154 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 211425552 is about 14540.4797720020. The cubic root of 211425552 is about 595.7341426463.

Adding to 211425552 its reverse (255524112), we get a palindrome (466949664).

The spelling of 211425552 in words is "two hundred eleven million, four hundred twenty-five thousand, five hundred fifty-two".