75217013 has 4 divisors (see below), whose sum is σ = 75247980. Its totient is φ = 75186048.

The previous prime is 75217003. The next prime is 75217031. The reversal of 75217013 is 31071257.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40666129 + 34550884 = 6377^2 + 5878^2 .

It is a cyclic number.

It is not a de Polignac number, because 75217013 - 2⁴ = 75216997 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 (75217003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11498 + ... + 16811.

It is an arithmetic number, because the mean of its divisors is an integer number (18811995).

Almost surely, 2^75217013 is an apocalyptic number.

It is an amenable number.

75217013 is a deficient number, since it is larger than the sum of its proper divisors (30967).

75217013 is a wasteful number, since it uses less digits than its factorization.

75217013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30966.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 75217013 is about 8672.7742389618. The cubic root of 75217013 is about 422.1226873125.

The spelling of 75217013 in words is "seventy-five million, two hundred seventeen thousand, thirteen".