72957299 has 4 divisors (see below), whose sum is σ = 73360560. Its totient is φ = 72554040.

The previous prime is 72957271. The next prime is 72957307. The reversal of 72957299 is 99275927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99275927 = 1259 ⋅78853.

It is a cyclic number.

It is not a de Polignac number, because 72957299 - 2²⁴ = 56180083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72957239) 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, 201359 + ... + 201720.

It is an arithmetic number, because the mean of its divisors is an integer number (18340140).

Almost surely, 2^72957299 is an apocalyptic number.

72957299 is a deficient number, since it is larger than the sum of its proper divisors (403261).

72957299 is a wasteful number, since it uses less digits than its factorization.

72957299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403260.

The product of its digits is 714420, while the sum is 50.

The square root of 72957299 is about 8541.5044927694. The cubic root of 72957299 is about 417.8524142632.

The spelling of 72957299 in words is "seventy-two million, nine hundred fifty-seven thousand, two hundred ninety-nine".