72210955 has 8 divisors (see below), whose sum is σ = 87420672. Its totient is φ = 57257088.

The previous prime is 72210949. The next prime is 72210959. The reversal of 72210955 is 55901227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72210955 - 2⁵ = 72210923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72210959) 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 7 ways as a sum of consecutive naturals, for example, 63339 + ... + 64468.

It is an arithmetic number, because the mean of its divisors is an integer number (10927584).

Almost surely, 2^72210955 is an apocalyptic number.

72210955 is a deficient number, since it is larger than the sum of its proper divisors (15209717).

72210955 is a wasteful number, since it uses less digits than its factorization.

72210955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127925.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 72210955 is about 8497.7029249086. The cubic root of 72210955 is about 416.4226685214.

The spelling of 72210955 in words is "seventy-two million, two hundred ten thousand, nine hundred fifty-five".