55472372657520 has 2560 divisors, whose sum is σ = 233720080957440. Its totient is φ = 10556209889280.

The previous prime is 55472372657489. The next prime is 55472372657549. The reversal of 55472372657520 is 2575627327455.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 210921568909 + ... + 210921569171.

It is an arithmetic number, because the mean of its divisors is an integer number (91296906624).

Almost surely, 2^{55472372657520} 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 55472372657520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116860040478720).

55472372657520 is an abundant number, since it is smaller than the sum of its proper divisors (178247708299920).

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

55472372657520 is a wasteful number, since it uses less digits than its factorization.

55472372657520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 123480000, while the sum is 60.

The spelling of 55472372657520 in words is "fifty-five trillion, four hundred seventy-two billion, three hundred seventy-two million, six hundred fifty-seven thousand, five hundred twenty".