72479453 has 2 divisors, whose sum is σ = 72479454. Its totient is φ = 72479452.

The previous prime is 72479447. The next prime is 72479489. The reversal of 72479453 is 35497427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64850809 + 7628644 = 8053^2 + 2762^2 .

It is a cyclic number.

It is not a de Polignac number, because 72479453 - 2⁶ = 72479389 is a prime.

It is a super-2 number, since 2×72479453² = 10506542214358418, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72479453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72479153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36239726 + 36239727.

It is an arithmetic number, because the mean of its divisors is an integer number (36239727).

Almost surely, 2^72479453 is an apocalyptic number.

It is an amenable number.

72479453 is a deficient number, since it is larger than the sum of its proper divisors (1).

72479453 is an equidigital number, since it uses as much as digits as its factorization.

72479453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 41.

The square root of 72479453 is about 8513.4865360791. The cubic root of 72479453 is about 416.9381506109.

The spelling of 72479453 in words is "seventy-two million, four hundred seventy-nine thousand, four hundred fifty-three".