157048639 has 4 divisors (see below), whose sum is σ = 171325800. Its totient is φ = 142771480.

The previous prime is 157048631. The next prime is 157048657. The reversal of 157048639 is 936840751.

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 157048639 - 2³ = 157048631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157048595 and 157048604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157048631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7138564 + ... + 7138585.

It is an arithmetic number, because the mean of its divisors is an integer number (42831450).

Almost surely, 2^157048639 is an apocalyptic number.

157048639 is a deficient number, since it is larger than the sum of its proper divisors (14277161).

157048639 is a wasteful number, since it uses less digits than its factorization.

157048639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14277160.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 157048639 is about 12531.9048432391. The cubic root of 157048639 is about 539.5247750899.

The spelling of 157048639 in words is "one hundred fifty-seven million, forty-eight thousand, six hundred thirty-nine".