157647243 has 16 divisors (see below), whose sum is σ = 227763200. Its totient is φ = 96414624.

The previous prime is 157647229. The next prime is 157647247. The reversal of 157647243 is 342746751.

It is not a de Polignac number, because 157647243 - 2⁴ = 157647227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157647247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6043 + ... + 18756.

It is an arithmetic number, because the mean of its divisors is an integer number (14235200).

Almost surely, 2^157647243 is an apocalyptic number.

157647243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

157647243 is a deficient number, since it is larger than the sum of its proper divisors (70115957).

157647243 is a wasteful number, since it uses less digits than its factorization.

157647243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24978.

The product of its digits is 141120, while the sum is 39.

The square root of 157647243 is about 12555.7653291227. The cubic root of 157647243 is about 540.2093872487.

The spelling of 157647243 in words is "one hundred fifty-seven million, six hundred forty-seven thousand, two hundred forty-three".