74529157 has 4 divisors (see below), whose sum is σ = 74572876. Its totient is φ = 74485440.

The previous prime is 74529149. The next prime is 74529163. The reversal of 74529157 is 75192547.

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 14791716 + 59737441 = 3846^2 + 7729^2 .

It is a cyclic number.

It is not a de Polignac number, because 74529157 - 2³ = 74529149 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 (74529107) 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, 19194 + ... + 22747.

It is an arithmetic number, because the mean of its divisors is an integer number (18643219).

Almost surely, 2^74529157 is an apocalyptic number.

It is an amenable number.

74529157 is a deficient number, since it is larger than the sum of its proper divisors (43719).

74529157 is a wasteful number, since it uses less digits than its factorization.

74529157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43718.

The product of its digits is 88200, while the sum is 40.

The square root of 74529157 is about 8633.0271052511. The cubic root of 74529157 is about 420.8319808428.

The spelling of 74529157 in words is "seventy-four million, five hundred twenty-nine thousand, one hundred fifty-seven".