726535253 has 4 divisors (see below), whose sum is σ = 726650988. Its totient is φ = 726419520.

The previous prime is 726535217. The next prime is 726535279. The reversal of 726535253 is 352535627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352535627 = 31 ⋅11372117.

It can be written as a sum of positive squares in 2 ways, for example, as 391169284 + 335365969 = 19778^2 + 18313^2 .

It is a cyclic number.

It is not a de Polignac number, because 726535253 - 2¹⁴ = 726518869 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 (726735253) 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, 47876 + ... + 61197.

It is an arithmetic number, because the mean of its divisors is an integer number (181662747).

Almost surely, 2^726535253 is an apocalyptic number.

It is an amenable number.

726535253 is a deficient number, since it is larger than the sum of its proper divisors (115735).

726535253 is a wasteful number, since it uses less digits than its factorization.

726535253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115734.

The product of its digits is 189000, while the sum is 38.

The square root of 726535253 is about 26954.3178915735. The cubic root of 726535253 is about 898.9845555568.

The spelling of 726535253 in words is "seven hundred twenty-six million, five hundred thirty-five thousand, two hundred fifty-three".