157851745 has 8 divisors (see below), whose sum is σ = 189552384. Its totient is φ = 126194544.

The previous prime is 157851719. The next prime is 157851751. The reversal of 157851745 is 547158751.

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

It is a cyclic number.

It is not a de Polignac number, because 157851745 - 2⁹ = 157851233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2239 + ... + 17908.

It is an arithmetic number, because the mean of its divisors is an integer number (23694048).

Almost surely, 2^157851745 is an apocalyptic number.

It is an amenable number.

157851745 is a deficient number, since it is larger than the sum of its proper divisors (31700639).

157851745 is a wasteful number, since it uses less digits than its factorization.

157851745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21719.

The product of its digits is 196000, while the sum is 43.

The square root of 157851745 is about 12563.9064386838. The cubic root of 157851745 is about 540.4428751360.

The spelling of 157851745 in words is "one hundred fifty-seven million, eight hundred fifty-one thousand, seven hundred forty-five".