72548550 has 72 divisors (see below), whose sum is σ = 195974064. Its totient is φ = 19241280.

The previous prime is 72548543. The next prime is 72548551. The reversal of 72548550 is 5584527.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72548551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 118044 + ... + 118656.

It is an arithmetic number, because the mean of its divisors is an integer number (2721862).

Almost surely, 2^72548550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72548550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97987032).

72548550 is an abundant number, since it is smaller than the sum of its proper divisors (123425514).

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

72548550 is a wasteful number, since it uses less digits than its factorization.

72548550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 72548550 is about 8517.5436599996. The cubic root of 72548550 is about 417.0706020581.

The spelling of 72548550 in words is "seventy-two million, five hundred forty-eight thousand, five hundred fifty".