157284487 has 8 divisors (see below), whose sum is σ = 166677840. Its totient is φ = 148155840.

The previous prime is 157284473. The next prime is 157284499. The reversal of 157284487 is 784482751.

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 157284487 - 2¹⁵ = 157251719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157284427) 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 7 ways as a sum of consecutive naturals, for example, 64953 + ... + 67330.

It is an arithmetic number, because the mean of its divisors is an integer number (20834730).

Almost surely, 2^157284487 is an apocalyptic number.

157284487 is a deficient number, since it is larger than the sum of its proper divisors (9393353).

157284487 is a wasteful number, since it uses less digits than its factorization.

157284487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132353.

The product of its digits is 501760, while the sum is 46.

The square root of 157284487 is about 12541.3112153395. The cubic root of 157284487 is about 539.7947173529.

The spelling of 157284487 in words is "one hundred fifty-seven million, two hundred eighty-four thousand, four hundred eighty-seven".