780536051 has 4 divisors (see below), whose sum is σ = 781416912. Its totient is φ = 779655192.

The previous prime is 780536041. The next prime is 780536059. The reversal of 780536051 is 150635087.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 780536051 - 2¹⁰ = 780535027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (780536059) 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, 439100 + ... + 440873.

It is an arithmetic number, because the mean of its divisors is an integer number (195354228).

Almost surely, 2^780536051 is an apocalyptic number.

780536051 is a deficient number, since it is larger than the sum of its proper divisors (880861).

780536051 is an equidigital number, since it uses as much as digits as its factorization.

780536051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880860.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 780536051 is about 27938.0752916159. The cubic root of 780536051 is about 920.7272333565.

The spelling of 780536051 in words is "seven hundred eighty million, five hundred thirty-six thousand, fifty-one".