72546227 has 4 divisors (see below), whose sum is σ = 78126720. Its totient is φ = 66965736.

The previous prime is 72546143. The next prime is 72546283. The reversal of 72546227 is 72264527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72264527 = 727 ⋅99401.

It is a cyclic number.

It is not a de Polignac number, because 72546227 - 2¹⁰ = 72545203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72546127) 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, 2790227 + ... + 2790252.

It is an arithmetic number, because the mean of its divisors is an integer number (19531680).

Almost surely, 2^72546227 is an apocalyptic number.

72546227 is a deficient number, since it is larger than the sum of its proper divisors (5580493).

72546227 is a wasteful number, since it uses less digits than its factorization.

72546227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580492.

The product of its digits is 47040, while the sum is 35.

The square root of 72546227 is about 8517.4072933023. The cubic root of 72546227 is about 417.0661504858.

The spelling of 72546227 in words is "seventy-two million, five hundred forty-six thousand, two hundred twenty-seven".