30755145 has 16 divisors (see below), whose sum is σ = 49299840. Its totient is φ = 16372224.

The previous prime is 30755143. The next prime is 30755147. The reversal of 30755145 is 54155703.

It is an interprime number because it is at equal distance from previous prime (30755143) and next prime (30755147).

It is not a de Polignac number, because 30755145 - 2¹ = 30755143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30755143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8121 + ... + 11289.

It is an arithmetic number, because the mean of its divisors is an integer number (3081240).

Almost surely, 2^30755145 is an apocalyptic number.

It is an amenable number.

30755145 is a deficient number, since it is larger than the sum of its proper divisors (18544695).

30755145 is a wasteful number, since it uses less digits than its factorization.

30755145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3824.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 30755145 is about 5545.7321428284. The cubic root of 30755145 is about 313.3087998245.

The spelling of 30755145 in words is "thirty million, seven hundred fifty-five thousand, one hundred forty-five".