72510103 has 4 divisors (see below), whose sum is σ = 72625648. Its totient is φ = 72394560.

The previous prime is 72510101. The next prime is 72510107. The reversal of 72510103 is 30101527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72510103 - 2¹ = 72510101 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 (72510101) 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, 56826 + ... + 58087.

It is an arithmetic number, because the mean of its divisors is an integer number (18156412).

Almost surely, 2^72510103 is an apocalyptic number.

72510103 is a deficient number, since it is larger than the sum of its proper divisors (115545).

72510103 is a wasteful number, since it uses less digits than its factorization.

72510103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115544.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 72510103 is about 8515.2864308842. The cubic root of 72510103 is about 416.9969137171.

The spelling of 72510103 in words is "seventy-two million, five hundred ten thousand, one hundred three".