52149786 has 64 divisors (see below), whose sum is σ = 120234240. Its totient is φ = 14952960.

The previous prime is 52149751. The next prime is 52149787. The reversal of 52149786 is 68794125.

It is not an unprimeable number, because it can be changed into a prime (52149787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73200 + ... + 73908.

It is an arithmetic number, because the mean of its divisors is an integer number (1878660).

Almost surely, 2^52149786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52149786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60117120).

52149786 is an abundant number, since it is smaller than the sum of its proper divisors (68084454).

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

52149786 is a wasteful number, since it uses less digits than its factorization.

52149786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791.

The product of its digits is 120960, while the sum is 42.

The square root of 52149786 is about 7221.4808730620. The cubic root of 52149786 is about 373.6091554032.

The spelling of 52149786 in words is "fifty-two million, one hundred forty-nine thousand, seven hundred eighty-six".