72155254 has 8 divisors (see below), whose sum is σ = 111158208. Its totient is φ = 35102520.

The previous prime is 72155243. The next prime is 72155257. The reversal of 72155254 is 45255127.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72155257) 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, 487462 + ... + 487609.

It is an arithmetic number, because the mean of its divisors is an integer number (13894776).

Almost surely, 2^72155254 is an apocalyptic number.

72155254 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

72155254 is a deficient number, since it is larger than the sum of its proper divisors (39002954).

72155254 is a wasteful number, since it uses less digits than its factorization.

72155254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975110.

The product of its digits is 14000, while the sum is 31.

The square root of 72155254 is about 8494.4248775300. The cubic root of 72155254 is about 416.3155696951.

The spelling of 72155254 in words is "seventy-two million, one hundred fifty-five thousand, two hundred fifty-four".