72106455 has 8 divisors (see below), whose sum is σ = 115370352. Its totient is φ = 38456768.

The previous prime is 72106439. The next prime is 72106457. The reversal of 72106455 is 55460127.

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 72106455 - 2⁴ = 72106439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72106457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2403534 + ... + 2403563.

It is an arithmetic number, because the mean of its divisors is an integer number (14421294).

Almost surely, 2^72106455 is an apocalyptic number.

72106455 is a deficient number, since it is larger than the sum of its proper divisors (43263897).

72106455 is a wasteful number, since it uses less digits than its factorization.

72106455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4807105.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 72106455 is about 8491.5519782900. The cubic root of 72106455 is about 416.2216963503.

The spelling of 72106455 in words is "seventy-two million, one hundred six thousand, four hundred fifty-five".