75238513 has 16 divisors (see below), whose sum is σ = 87383296. Its totient is φ = 63452160.

The previous prime is 75238507. The next prime is 75238531. The reversal of 75238513 is 31583257.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75238513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75238213) 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, 173545 + ... + 173977.

It is an arithmetic number, because the mean of its divisors is an integer number (5461456).

Almost surely, 2^75238513 is an apocalyptic number.

It is an amenable number.

75238513 is a deficient number, since it is larger than the sum of its proper divisors (12144783).

75238513 is a wasteful number, since it uses less digits than its factorization.

75238513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784.

The product of its digits is 25200, while the sum is 34.

The square root of 75238513 is about 8674.0136615064. The cubic root of 75238513 is about 422.1629032727.

The spelling of 75238513 in words is "seventy-five million, two hundred thirty-eight thousand, five hundred thirteen".