55172467520 has 336 divisors, whose sum is σ = 147158415360. Its totient is φ = 19665580032.

The previous prime is 55172467507. The next prime is 55172467523. The reversal of 55172467520 is 2576427155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55172467523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144053249 + ... + 144053631.

Almost surely, 2^55172467520 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 55172467520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73579207680).

55172467520 is an abundant number, since it is smaller than the sum of its proper divisors (91985947840).

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

55172467520 is a wasteful number, since it uses less digits than its factorization.

55172467520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 44.

The spelling of 55172467520 in words is "fifty-five billion, one hundred seventy-two million, four hundred sixty-seven thousand, five hundred twenty".