52261740 has 96 divisors (see below), whose sum is σ = 172186560. Its totient is φ = 13114368.

The previous prime is 52261733. The next prime is 52261747. The reversal of 52261740 is 4716225.

52261740 is a `hidden beast` number, since 5 + 2 + 2 + 617 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (52261733) and next prime (52261747).

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

It is not an unprimeable number, because it can be changed into a prime (52261747) 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, 6334 + ... + 12026.

It is an arithmetic number, because the mean of its divisors is an integer number (1793610).

Almost surely, 2^52261740 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 52261740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86093280).

52261740 is an abundant number, since it is smaller than the sum of its proper divisors (119924820).

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

52261740 is a wasteful number, since it uses less digits than its factorization.

52261740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5728 (or 5720 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 52261740 is about 7229.2281745702. The cubic root of 52261740 is about 373.8763162561.

Adding to 52261740 its reverse (4716225), we get a palindrome (56977965).

The spelling of 52261740 in words is "fifty-two million, two hundred sixty-one thousand, seven hundred forty".