855231552 has 168 divisors, whose sum is σ = 2861803776. Its totient is φ = 239099904.

The previous prime is 855231551. The next prime is 855231571. The reversal of 855231552 is 255132558.

855231552 is a `hidden beast` number, since 85 + 5 + 23 + 1 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855231551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187248 + ... + 191760.

Almost surely, 2^855231552 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 855231552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1430901888).

855231552 is an abundant number, since it is smaller than the sum of its proper divisors (2006572224).

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

855231552 is a wasteful number, since it uses less digits than its factorization.

855231552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4585 (or 4572 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 855231552 is about 29244.3422220436. The cubic root of 855231552 is about 949.2076688087.

It can be divided in two parts, 8552 and 31552, that added together give a palindrome (40104).

The spelling of 855231552 in words is "eight hundred fifty-five million, two hundred thirty-one thousand, five hundred fifty-two".