157887494 has 8 divisors (see below), whose sum is σ = 237075120. Its totient is φ = 78862456.

The previous prime is 157887493. The next prime is 157887553. The reversal of 157887494 is 494788751.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157887491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38189 + ... + 42120.

It is an arithmetic number, because the mean of its divisors is an integer number (29634390).

Almost surely, 2^157887494 is an apocalyptic number.

157887494 is a deficient number, since it is larger than the sum of its proper divisors (79187626).

157887494 is an equidigital number, since it uses as much as digits as its factorization.

157887494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81294.

The product of its digits is 2257920, while the sum is 53.

The square root of 157887494 is about 12565.3290446371. The cubic root of 157887494 is about 540.4836704490.

The spelling of 157887494 in words is "one hundred fifty-seven million, eight hundred eighty-seven thousand, four hundred ninety-four".