72323057 has 4 divisors (see below), whose sum is σ = 74087076. Its totient is φ = 70559040.

The previous prime is 72323029. The next prime is 72323059. The reversal of 72323057 is 75032327.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3748096 + 68574961 = 1936^2 + 8281^2 .

It is a cyclic number.

It is not a de Polignac number, because 72323057 - 2¹⁴ = 72306673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72323059) 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, 881948 + ... + 882029.

It is an arithmetic number, because the mean of its divisors is an integer number (18521769).

Almost surely, 2^72323057 is an apocalyptic number.

It is an amenable number.

72323057 is a deficient number, since it is larger than the sum of its proper divisors (1764019).

72323057 is a wasteful number, since it uses less digits than its factorization.

72323057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764018.

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 72323057 is about 8504.2963847693. The cubic root of 72323057 is about 416.6380452518.

The spelling of 72323057 in words is "seventy-two million, three hundred twenty-three thousand, fifty-seven".