72031253 has 4 divisors (see below), whose sum is σ = 82321440. Its totient is φ = 61741068.

The previous prime is 72031247. The next prime is 72031313. The reversal of 72031253 is 35213027.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35213027 = 2141 ⋅16447.

It is a cyclic number.

It is not a de Polignac number, because 72031253 - 2⁴ = 72031237 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 (72031243) 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, 5145083 + ... + 5145096.

It is an arithmetic number, because the mean of its divisors is an integer number (20580360).

Almost surely, 2^72031253 is an apocalyptic number.

It is an amenable number.

72031253 is a deficient number, since it is larger than the sum of its proper divisors (10290187).

72031253 is a wasteful number, since it uses less digits than its factorization.

72031253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10290186.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 72031253 is about 8487.1227751223. The cubic root of 72031253 is about 416.0769492917.

The spelling of 72031253 in words is "seventy-two million, thirty-one thousand, two hundred fifty-three".