72452455553 has 4 divisors (see below), whose sum is σ = 73640200788. Its totient is φ = 71264710320.

The previous prime is 72452455531. The next prime is 72452455609. The reversal of 72452455553 is 35555425427.

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 597900304 + 71854555249 = 24452^2 + 268057^2 .

It is a cyclic number.

It is not a de Polignac number, because 72452455553 - 2¹⁸ = 72452193409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72452455498 and 72452455507.

It is not an unprimeable number, because it can be changed into a prime (72452455253) 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, 593872526 + ... + 593872647.

It is an arithmetic number, because the mean of its divisors is an integer number (18410050197).

Almost surely, 2^72452455553 is an apocalyptic number.

It is an amenable number.

72452455553 is a deficient number, since it is larger than the sum of its proper divisors (1187745235).

72452455553 is a wasteful number, since it uses less digits than its factorization.

72452455553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187745234.

The product of its digits is 4200000, while the sum is 47.

The spelling of 72452455553 in words is "seventy-two billion, four hundred fifty-two million, four hundred fifty-five thousand, five hundred fifty-three".