72453 has 4 divisors (see below), whose sum is σ = 96608. Its totient is φ = 48300.

The previous prime is 72431. The next prime is 72461. The reversal of 72453 is 35427.

Added to its reverse (35427) it gives a triangular number (107880 = T₄₆₄).

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 72453 - 2⁵ = 72421 is a prime.

It is a d-powerful number, because it can be written as 7³ + 2³ + 4⁸ + 5 + 3⁸ .

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12073 + ... + 12078.

It is an arithmetic number, because the mean of its divisors is an integer number (24152).

2⁷²⁴⁵³ is an apocalyptic number.

It is an amenable number.

72453 is a deficient number, since it is larger than the sum of its proper divisors (24155).

72453 is a wasteful number, since it uses less digits than its factorization.

72453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24154.

The product of its digits is 840, while the sum is 21.

The square root of 72453 is about 269.1709493983. The cubic root of 72453 is about 41.6887420799.

Adding to 72453 its reverse (35427), we get a triangular number (107880 = T₄₆₄).

It can be divided in two parts, 724 and 53, that added together give a palindrome (777).

The spelling of 72453 in words is "seventy-two thousand, four hundred fifty-three".