851442552 has 192 divisors, whose sum is σ = 2565108000. Its totient is φ = 254800896.

The previous prime is 851442551. The next prime is 851442577. The reversal of 851442552 is 255244158.

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 (851442551) 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, 10258303 + ... + 10258385.

Almost surely, 2^851442552 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 851442552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1282554000).

851442552 is an abundant number, since it is smaller than the sum of its proper divisors (1713665448).

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

851442552 is a wasteful number, since it uses less digits than its factorization.

851442552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 134 counting only the distinct ones).

The product of its digits is 64000, while the sum is 36.

The square root of 851442552 is about 29179.4885493218. The cubic root of 851442552 is about 947.8038102797.

The spelling of 851442552 in words is "eight hundred fifty-one million, four hundred forty-two thousand, five hundred fifty-two".