75749453 has 8 divisors (see below), whose sum is σ = 81770808. Its totient is φ = 69755904.

The previous prime is 75749449. The next prime is 75749459. The reversal of 75749453 is 35494757.

It can be written as a sum of positive squares in 4 ways, for example, as 9375844 + 66373609 = 3062^2 + 8147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75749453 - 2² = 75749449 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 (75749459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1100 + ... + 12357.

It is an arithmetic number, because the mean of its divisors is an integer number (10221351).

Almost surely, 2^75749453 is an apocalyptic number.

It is an amenable number.

75749453 is a deficient number, since it is larger than the sum of its proper divisors (6021355).

75749453 is a wasteful number, since it uses less digits than its factorization.

75749453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13903.

The product of its digits is 529200, while the sum is 44.

The square root of 75749453 is about 8703.4161683789. The cubic root of 75749453 is about 423.1163754190.

The spelling of 75749453 in words is "seventy-five million, seven hundred forty-nine thousand, four hundred fifty-three".