52261340 has 48 divisors (see below), whose sum is σ = 114102912. Its totient is φ = 20091456.

The previous prime is 52261333. The next prime is 52261351. The reversal of 52261340 is 4316225.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57167 + ... + 58073.

It is an arithmetic number, because the mean of its divisors is an integer number (2377144).

Almost surely, 2^52261340 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 52261340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57051456).

52261340 is an abundant number, since it is smaller than the sum of its proper divisors (61841572).

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

52261340 is a wasteful number, since it uses less digits than its factorization.

52261340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 52261340 is about 7229.2005090466. The cubic root of 52261340 is about 373.8753623976.

Adding to 52261340 its reverse (4316225), we get a palindrome (56577565).

The spelling of 52261340 in words is "fifty-two million, two hundred sixty-one thousand, three hundred forty".