72175552 has 28 divisors (see below), whose sum is σ = 143825976. Its totient is φ = 35936000.

The previous prime is 72175517. The next prime is 72175553. The reversal of 72175552 is 25557127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72175553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13818 + ... + 18310.

It is an arithmetic number, because the mean of its divisors is an integer number (5136642).

Almost surely, 2^72175552 is an apocalyptic number.

It is an amenable number.

72175552 is a deficient number, since it is larger than the sum of its proper divisors (71650424).

72175552 is a wasteful number, since it uses less digits than its factorization.

72175552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4756 (or 4746 counting only the distinct ones).

The product of its digits is 24500, while the sum is 34.

The square root of 72175552 is about 8495.6195771703. The cubic root of 72175552 is about 416.3546039566.

It can be divided in two parts, 72175 and 552, that added together give a palindrome (72727).

The spelling of 72175552 in words is "seventy-two million, one hundred seventy-five thousand, five hundred fifty-two".