19973253 has 4 divisors (see below), whose sum is σ = 26631008. Its totient is φ = 13315500.

The previous prime is 19973251. The next prime is 19973263. The reversal of 19973253 is 35237991.

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 19973253 - 2¹ = 19973251 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 (19973251) 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, 3328873 + ... + 3328878.

It is an arithmetic number, because the mean of its divisors is an integer number (6657752).

Almost surely, 2^19973253 is an apocalyptic number.

It is an amenable number.

19973253 is a deficient number, since it is larger than the sum of its proper divisors (6657755).

19973253 is an equidigital number, since it uses as much as digits as its factorization.

19973253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6657754.

The product of its digits is 51030, while the sum is 39.

The square root of 19973253 is about 4469.1445490161. The cubic root of 19973253 is about 271.3207034644.

The spelling of 19973253 in words is "nineteen million, nine hundred seventy-three thousand, two hundred fifty-three".