157489507 has 8 divisors (see below), whose sum is σ = 180172800. Its totient is φ = 134852424.

The previous prime is 157489489. The next prime is 157489523. The reversal of 157489507 is 705984751.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-157489507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157489567) 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 7 ways as a sum of consecutive naturals, for example, 3907 + ... + 18172.

It is an arithmetic number, because the mean of its divisors is an integer number (22521600).

Almost surely, 2^157489507 is an apocalyptic number.

157489507 is a deficient number, since it is larger than the sum of its proper divisors (22683293).

157489507 is a wasteful number, since it uses less digits than its factorization.

157489507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23105.

The product of its (nonzero) digits is 352800, while the sum is 46.

The square root of 157489507 is about 12549.4823399214. The cubic root of 157489507 is about 540.0291559475.

The spelling of 157489507 in words is "one hundred fifty-seven million, four hundred eighty-nine thousand, five hundred seven".