72103255 has 24 divisors (see below), whose sum is σ = 101368800. Its totient is φ = 49089600.

The previous prime is 72103253. The next prime is 72103277. The reversal of 72103255 is 55230127.

It is not a de Polignac number, because 72103255 - 2¹ = 72103253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72103253) 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 23 ways as a sum of consecutive naturals, for example, 36021 + ... + 37969.

It is an arithmetic number, because the mean of its divisors is an integer number (4223700).

Almost surely, 2^72103255 is an apocalyptic number.

72103255 is a deficient number, since it is larger than the sum of its proper divisors (29265545).

72103255 is a wasteful number, since it uses less digits than its factorization.

72103255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119 (or 2112 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 72103255 is about 8491.3635536350. The cubic root of 72103255 is about 416.2155391155.

The spelling of 72103255 in words is "seventy-two million, one hundred three thousand, two hundred fifty-five".