157947283 has 4 divisors (see below), whose sum is σ = 170097088. Its totient is φ = 145797480.

The previous prime is 157947271. The next prime is 157947287. The reversal of 157947283 is 382749751.

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 157947283 - 2⁹ = 157946771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157947287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6074883 + ... + 6074908.

It is an arithmetic number, because the mean of its divisors is an integer number (42524272).

Almost surely, 2^157947283 is an apocalyptic number.

157947283 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

157947283 is a deficient number, since it is larger than the sum of its proper divisors (12149805).

157947283 is a wasteful number, since it uses less digits than its factorization.

157947283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12149804.

The product of its digits is 423360, while the sum is 46.

The square root of 157947283 is about 12567.7079453654. The cubic root of 157947283 is about 540.5518854781.

The spelling of 157947283 in words is "one hundred fifty-seven million, nine hundred forty-seven thousand, two hundred eighty-three".