52109940 has 48 divisors (see below), whose sum is σ = 147369600. Its totient is φ = 13756800.

The previous prime is 52109933. The next prime is 52109983. The reversal of 52109940 is 4990125.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 52109898 and 52109907.

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, 1761 + ... + 10359.

It is an arithmetic number, because the mean of its divisors is an integer number (3070200).

Almost surely, 2^52109940 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 52109940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73684800).

52109940 is an abundant number, since it is smaller than the sum of its proper divisors (95259660).

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

52109940 is a wasteful number, since it uses less digits than its factorization.

52109940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8712 (or 8710 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 52109940 is about 7218.7214934502. The cubic root of 52109940 is about 373.5139768501.

The spelling of 52109940 in words is "fifty-two million, one hundred nine thousand, nine hundred forty".