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72725063 = 531372171
BaseRepresentation
bin1000101010110…
…11001001000111
312001211211000212
410111123021013
5122104200223
611114430035
71542103265
oct425331107
9161754025
1072725063
1138062464
122043231b
13120b3ca8
149931435
1565b8278
hex455b247

72725063 has 4 divisors (see below), whose sum is σ = 74097288. Its totient is φ = 71352840.

The previous prime is 72725047. The next prime is 72725077. The reversal of 72725063 is 36052727.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36052727 = 317113731.

It is not a de Polignac number, because 72725063 - 24 = 72725047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72725033) 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 3 ways as a sum of consecutive naturals, for example, 686033 + ... + 686138.

It is an arithmetic number, because the mean of its divisors is an integer number (18524322).

Almost surely, 272725063 is an apocalyptic number.

72725063 is a deficient number, since it is larger than the sum of its proper divisors (1372225).

72725063 is a wasteful number, since it uses less digits than its factorization.

72725063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372224.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 72725063 is about 8527.8990964950. The cubic root of 72725063 is about 417.4085769197.

The spelling of 72725063 in words is "seventy-two million, seven hundred twenty-five thousand, sixty-three".

Divisors: 1 53 1372171 72725063