72540107 has 4 divisors (see below), whose sum is σ = 75041520. Its totient is φ = 70038696.

The previous prime is 72540089. The next prime is 72540113. The reversal of 72540107 is 70104527.

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 72540107 - 2¹⁰ = 72539083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72540187) 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, 1250663 + ... + 1250720.

It is an arithmetic number, because the mean of its divisors is an integer number (18760380).

Almost surely, 2^72540107 is an apocalyptic number.

72540107 is a deficient number, since it is larger than the sum of its proper divisors (2501413).

72540107 is a wasteful number, since it uses less digits than its factorization.

72540107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501412.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 72540107 is about 8517.0480214685. The cubic root of 72540107 is about 417.0544222553.

The spelling of 72540107 in words is "seventy-two million, five hundred forty thousand, one hundred seven".