52636340 has 12 divisors (see below), whose sum is σ = 110536356. Its totient is φ = 21054528.

The previous prime is 52636321. The next prime is 52636361. The reversal of 52636340 is 4363625.

It can be written as a sum of positive squares in 2 ways, for example, as 28153636 + 24482704 = 5306^2 + 4948^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1315889 + ... + 1315928.

It is an arithmetic number, because the mean of its divisors is an integer number (9211363).

Almost surely, 2^52636340 is an apocalyptic number.

It is an amenable number.

52636340 is an abundant number, since it is smaller than the sum of its proper divisors (57900016).

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

52636340 is a wasteful number, since it uses less digits than its factorization.

52636340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631826 (or 2631824 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 52636340 is about 7255.0906265877. The cubic root of 52636340 is about 374.7674765915.

Adding to 52636340 its reverse (4363625), we get a palindrome (56999965).

The spelling of 52636340 in words is "fifty-two million, six hundred thirty-six thousand, three hundred forty".