72322755 has 8 divisors (see below), whose sum is σ = 115716432. Its totient is φ = 38572128.

The previous prime is 72322751. The next prime is 72322763. The reversal of 72322755 is 55722327.

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

It is not a de Polignac number, because 72322755 - 2² = 72322751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72322751) 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, 2410744 + ... + 2410773.

It is an arithmetic number, because the mean of its divisors is an integer number (14464554).

Almost surely, 2^72322755 is an apocalyptic number.

72322755 is a deficient number, since it is larger than the sum of its proper divisors (43393677).

72322755 is a wasteful number, since it uses less digits than its factorization.

72322755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4821525.

The product of its digits is 29400, while the sum is 33.

The square root of 72322755 is about 8504.2786290196. The cubic root of 72322755 is about 416.6374653313.

The spelling of 72322755 in words is "seventy-two million, three hundred twenty-two thousand, seven hundred fifty-five".