780053 has 4 divisors (see below), whose sum is σ = 805248. Its totient is φ = 754860.

The previous prime is 780049. The next prime is 780061. The reversal of 780053 is 350087.

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 a cyclic number.

It is not a de Polignac number, because 780053 - 2² = 780049 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 (780253) 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, 12551 + ... + 12612.

It is an arithmetic number, because the mean of its divisors is an integer number (201312).

2⁷⁸⁰⁰⁵³ is an apocalyptic number.

It is an amenable number.

780053 is a deficient number, since it is larger than the sum of its proper divisors (25195).

780053 is a wasteful number, since it uses less digits than its factorization.

780053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25194.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 780053 is about 883.2060914645. The cubic root of 780053 is about 92.0537257083.

The spelling of 780053 in words is "seven hundred eighty thousand, fifty-three".