72354550 has 48 divisors (see below), whose sum is σ = 148731552. Its totient is φ = 26048000.

The previous prime is 72354547. The next prime is 72354551. The reversal of 72354550 is 5545327.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72354551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17700 + ... + 21400.

It is an arithmetic number, because the mean of its divisors is an integer number (3098574).

Almost surely, 2^72354550 is an apocalyptic number.

72354550 is an abundant number, since it is smaller than the sum of its proper divisors (76377002).

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

72354550 is a wasteful number, since it uses less digits than its factorization.

72354550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3753 (or 3748 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 72354550 is about 8506.1477767554. The cubic root of 72354550 is about 416.6985113439.

Adding to 72354550 its reverse (5545327), we get a palindrome (77899877).

The spelling of 72354550 in words is "seventy-two million, three hundred fifty-four thousand, five hundred fifty".