157458747 has 4 divisors (see below), whose sum is σ = 209945000. Its totient is φ = 104972496.

The previous prime is 157458731. The next prime is 157458761. The reversal of 157458747 is 747854751.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 157458747 - 2⁴ = 157458731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157458696 and 157458705.

It is not an unprimeable number, because it can be changed into a prime (157458727) 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, 26243122 + ... + 26243127.

It is an arithmetic number, because the mean of its divisors is an integer number (52486250).

Almost surely, 2^157458747 is an apocalyptic number.

157458747 is a deficient number, since it is larger than the sum of its proper divisors (52486253).

157458747 is an equidigital number, since it uses as much as digits as its factorization.

157458747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52486252.

The product of its digits is 1097600, while the sum is 48.

The square root of 157458747 is about 12548.2567315145. The cubic root of 157458747 is about 539.9939951321.

The spelling of 157458747 in words is "one hundred fifty-seven million, four hundred fifty-eight thousand, seven hundred forty-seven".