157288643 has 8 divisors (see below), whose sum is σ = 160494336. Its totient is φ = 154110600.

The previous prime is 157288639. The next prime is 157288661. The reversal of 157288643 is 346882751.

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 157288643 - 2² = 157288639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157288594 and 157288603.

It is not an unprimeable number, because it can be changed into a prime (157288693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4778 + ... + 18368.

It is an arithmetic number, because the mean of its divisors is an integer number (20061792).

Almost surely, 2^157288643 is an apocalyptic number.

157288643 is a deficient number, since it is larger than the sum of its proper divisors (3205693).

157288643 is a wasteful number, since it uses less digits than its factorization.

157288643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13825.

The product of its digits is 322560, while the sum is 44.

The square root of 157288643 is about 12541.4769066486. The cubic root of 157288643 is about 539.7994717253.

The spelling of 157288643 in words is "one hundred fifty-seven million, two hundred eighty-eight thousand, six hundred forty-three".