157890827 has 4 divisors (see below), whose sum is σ = 157920840. Its totient is φ = 157860816.

The previous prime is 157890773. The next prime is 157890839. The reversal of 157890827 is 728098751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 728098751 = 2861 ⋅254491.

It is a cyclic number.

It is not a de Polignac number, because 157890827 - 2¹⁰ = 157889803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157890847) 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, 4802 + ... + 18407.

It is an arithmetic number, because the mean of its divisors is an integer number (39480210).

Almost surely, 2^157890827 is an apocalyptic number.

157890827 is a deficient number, since it is larger than the sum of its proper divisors (30013).

157890827 is an equidigital number, since it uses as much as digits as its factorization.

157890827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30012.

The product of its (nonzero) digits is 282240, while the sum is 47.

The square root of 157890827 is about 12565.4616707863. The cubic root of 157890827 is about 540.4874736199.

The spelling of 157890827 in words is "one hundred fifty-seven million, eight hundred ninety thousand, eight hundred twenty-seven".