157047747 has 8 divisors (see below), whose sum is σ = 212265744. Its totient is φ = 103264128.

The previous prime is 157047743. The next prime is 157047757. The reversal of 157047747 is 747740751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 157047747 - 2² = 157047743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157047699 and 157047708.

It is not an unprimeable number, because it can be changed into a prime (157047743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358338 + ... + 358775.

It is an arithmetic number, because the mean of its divisors is an integer number (26533218).

Almost surely, 2^157047747 is an apocalyptic number.

157047747 is a deficient number, since it is larger than the sum of its proper divisors (55217997).

157047747 is an equidigital number, since it uses as much as digits as its factorization.

157047747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717189.

The product of its (nonzero) digits is 192080, while the sum is 42.

The square root of 157047747 is about 12531.8692540259. The cubic root of 157047747 is about 539.5237536292.

The spelling of 157047747 in words is "one hundred fifty-seven million, forty-seven thousand, seven hundred forty-seven".