75030530 has 32 divisors (see below), whose sum is σ = 137161728. Its totient is φ = 29548800.

The previous prime is 75030523. The next prime is 75030547. The reversal of 75030530 is 3503057.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 75030496 and 75030505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311210 + ... + 311450.

It is an arithmetic number, because the mean of its divisors is an integer number (4286304).

Almost surely, 2^75030530 is an apocalyptic number.

75030530 is a deficient number, since it is larger than the sum of its proper divisors (62131198).

75030530 is a wasteful number, since it uses less digits than its factorization.

75030530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602.

The product of its (nonzero) digits is 1575, while the sum is 23.

The square root of 75030530 is about 8662.0165088737. The cubic root of 75030530 is about 421.7735471088.

Adding to 75030530 its reverse (3503057), we get a palindrome (78533587).

The spelling of 75030530 in words is "seventy-five million, thirty thousand, five hundred thirty".