157085387 has 4 divisors (see below), whose sum is σ = 161330976. Its totient is φ = 152839800.

The previous prime is 157085381. The next prime is 157085399. The reversal of 157085387 is 783580751.

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 157085387 - 2⁶ = 157085323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157085381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2122739 + ... + 2122812.

It is an arithmetic number, because the mean of its divisors is an integer number (40332744).

Almost surely, 2^157085387 is an apocalyptic number.

157085387 is a deficient number, since it is larger than the sum of its proper divisors (4245589).

157085387 is an equidigital number, since it uses as much as digits as its factorization.

157085387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245588.

The product of its (nonzero) digits is 235200, while the sum is 44.

The square root of 157085387 is about 12533.3709352273. The cubic root of 157085387 is about 539.5668531585.

The spelling of 157085387 in words is "one hundred fifty-seven million, eighty-five thousand, three hundred eighty-seven".