705120051 has 4 divisors (see below), whose sum is σ = 940160072. Its totient is φ = 470080032.

The previous prime is 705120047. The next prime is 705120061. The reversal of 705120051 is 150021507.

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

It is not a de Polignac number, because 705120051 - 2² = 705120047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705120041) 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, 117520006 + ... + 117520011.

It is an arithmetic number, because the mean of its divisors is an integer number (235040018).

Almost surely, 2^705120051 is an apocalyptic number.

705120051 is a deficient number, since it is larger than the sum of its proper divisors (235040021).

705120051 is a wasteful number, since it uses less digits than its factorization.

705120051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235040020.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 705120051 is about 26554.0966895882. The cubic root of 705120051 is about 890.0635610878.

Adding to 705120051 its reverse (150021507), we get a palindrome (855141558).

The spelling of 705120051 in words is "seven hundred five million, one hundred twenty thousand, fifty-one".