52109040 has 40 divisors (see below), whose sum is σ = 161538768. Its totient is φ = 13895680.

The previous prime is 52109033. The next prime is 52109051. The reversal of 52109040 is 4090125.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 52108998 and 52109016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108321 + ... + 108800.

Almost surely, 2^52109040 is an apocalyptic number.

It is an amenable number.

52109040 is an abundant number, since it is smaller than the sum of its proper divisors (109429728).

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

52109040 is a wasteful number, since it uses less digits than its factorization.

52109040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217137 (or 217131 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 52109040 is about 7218.6591552725. The cubic root of 52109040 is about 373.5118264957.

Adding to 52109040 its reverse (4090125), we get a palindrome (56199165).

The spelling of 52109040 in words is "fifty-two million, one hundred nine thousand, forty".