52452120540 has 48 divisors (see below), whose sum is σ = 153251417088. Its totient is φ = 13379091264.

The previous prime is 52452120473. The next prime is 52452120571. The reversal of 52452120540 is 4502125425.

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 = 52452120498 and 52452120507.

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, 19003012 + ... + 19005771.

It is an arithmetic number, because the mean of its divisors is an integer number (3192737856).

Almost surely, 2^52452120540 is an apocalyptic number.

It is an amenable number.

52452120540 is an abundant number, since it is smaller than the sum of its proper divisors (100799296548).

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

52452120540 is a wasteful number, since it uses less digits than its factorization.

52452120540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38008818 (or 38008816 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 52452120540 its reverse (4502125425), we get a palindrome (56954245965).

The spelling of 52452120540 in words is "fifty-two billion, four hundred fifty-two million, one hundred twenty thousand, five hundred forty".