157649827 has 4 divisors (see below), whose sum is σ = 158249520. Its totient is φ = 157050136.

The previous prime is 157649819. The next prime is 157649831. The reversal of 157649827 is 728946751.

157649827 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 157649827 - 2³ = 157649819 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157649867) 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, 299452 + ... + 299977.

It is an arithmetic number, because the mean of its divisors is an integer number (39562380).

Almost surely, 2^157649827 is an apocalyptic number.

157649827 is a deficient number, since it is larger than the sum of its proper divisors (599693).

157649827 is an equidigital number, since it uses as much as digits as its factorization.

157649827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599692.

The product of its digits is 846720, while the sum is 49.

The square root of 157649827 is about 12555.8682296367. The cubic root of 157649827 is about 540.2123387612.

The spelling of 157649827 in words is "one hundred fifty-seven million, six hundred forty-nine thousand, eight hundred twenty-seven".