72200453 has 4 divisors (see below), whose sum is σ = 77754348. Its totient is φ = 66646560.

The previous prime is 72200441. The next prime is 72200477. The reversal of 72200453 is 35400227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35400227 = 2551 ⋅13877.

It can be written as a sum of positive squares in 2 ways, for example, as 10452289 + 61748164 = 3233^2 + 7858^2 .

It is a cyclic number.

It is not a de Polignac number, because 72200453 - 2¹² = 72196357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72200753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2776928 + ... + 2776953.

It is an arithmetic number, because the mean of its divisors is an integer number (19438587).

Almost surely, 2^72200453 is an apocalyptic number.

It is an amenable number.

72200453 is a deficient number, since it is larger than the sum of its proper divisors (5553895).

72200453 is a wasteful number, since it uses less digits than its factorization.

72200453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553894.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 72200453 is about 8497.0849707414. The cubic root of 72200453 is about 416.4024800662.

The spelling of 72200453 in words is "seventy-two million, two hundred thousand, four hundred fifty-three".