157749537 has 16 divisors (see below), whose sum is σ = 235657152. Its totient is φ = 93021120.

The previous prime is 157749521. The next prime is 157749583. The reversal of 157749537 is 735947751.

It is not a de Polignac number, because 157749537 - 2⁴ = 157749521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157749517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63378 + ... + 65819.

It is an arithmetic number, because the mean of its divisors is an integer number (14728572).

Almost surely, 2^157749537 is an apocalyptic number.

It is an amenable number.

157749537 is a deficient number, since it is larger than the sum of its proper divisors (77907615).

157749537 is a wasteful number, since it uses less digits than its factorization.

157749537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129248.

The product of its digits is 926100, while the sum is 48.

The square root of 157749537 is about 12559.8382553280. The cubic root of 157749537 is about 540.3262055110.

The spelling of 157749537 in words is "one hundred fifty-seven million, seven hundred forty-nine thousand, five hundred thirty-seven".