75204513 has 6 divisors (see below), whose sum is σ = 108628754. Its totient is φ = 50136336.

The previous prime is 75204443. The next prime is 75204517. The reversal of 75204513 is 31540257.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 74442384 + 762129 = 8628^2 + 873^2 .

It is not a de Polignac number, because 75204513 - 2⁸ = 75204257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75204517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4178020 + ... + 4178037.

Almost surely, 2^75204513 is an apocalyptic number.

It is an amenable number.

75204513 is a deficient number, since it is larger than the sum of its proper divisors (33424241).

75204513 is a wasteful number, since it uses less digits than its factorization.

75204513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8356063 (or 8356060 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 75204513 is about 8672.0535630265. The cubic root of 75204513 is about 422.0993024173.

The spelling of 75204513 in words is "seventy-five million, two hundred four thousand, five hundred thirteen".