72345055 has 8 divisors (see below), whose sum is σ = 86859792. Its totient is φ = 57845568.

The previous prime is 72345029. The next prime is 72345071. The reversal of 72345055 is 55054327.

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 72345055 - 2⁵ = 72345023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15952 + ... + 19978.

It is an arithmetic number, because the mean of its divisors is an integer number (10857474).

Almost surely, 2^72345055 is an apocalyptic number.

72345055 is a deficient number, since it is larger than the sum of its proper divisors (14514737).

72345055 is a wasteful number, since it uses less digits than its factorization.

72345055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7625.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 72345055 is about 8505.5896327062. The cubic root of 72345055 is about 416.6802829328.

The spelling of 72345055 in words is "seventy-two million, three hundred forty-five thousand, fifty-five".