75148523 has 4 divisors (see below), whose sum is σ = 76380528. Its totient is φ = 73916520.

The previous prime is 75148487. The next prime is 75148537. The reversal of 75148523 is 32584157.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 75148523 - 2⁸ = 75148267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75148573) 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, 615911 + ... + 616032.

It is an arithmetic number, because the mean of its divisors is an integer number (19095132).

Almost surely, 2^75148523 is an apocalyptic number.

75148523 is a deficient number, since it is larger than the sum of its proper divisors (1232005).

75148523 is a wasteful number, since it uses less digits than its factorization.

75148523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232004.

The product of its digits is 33600, while the sum is 35.

The square root of 75148523 is about 8668.8247761735. The cubic root of 75148523 is about 421.9945249846.

The spelling of 75148523 in words is "seventy-five million, one hundred forty-eight thousand, five hundred twenty-three".