30755005 has 8 divisors (see below), whose sum is σ = 37272024. Its totient is φ = 24360000.

The previous prime is 30754991. The next prime is 30755009. The reversal of 30755005 is 50055703.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1530169 + 29224836 = 1237^2 + 5406^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-30755005 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 (30755009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29946 + ... + 30955.

It is an arithmetic number, because the mean of its divisors is an integer number (4659003).

Almost surely, 2^30755005 is an apocalyptic number.

It is an amenable number.

30755005 is a deficient number, since it is larger than the sum of its proper divisors (6517019).

30755005 is a wasteful number, since it uses less digits than its factorization.

30755005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61007.

The product of its (nonzero) digits is 2625, while the sum is 25.

The square root of 30755005 is about 5545.7195204951. The cubic root of 30755005 is about 313.3083244211.

The spelling of 30755005 in words is "thirty million, seven hundred fifty-five thousand, five".