157478289 has 8 divisors (see below), whose sum is σ = 221022240. Its totient is φ = 99459936.

The previous prime is 157478281. The next prime is 157478297. The reversal of 157478289 is 982874751.

157478289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (157478281) and next prime (157478297).

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

It is not a de Polignac number, because 157478289 - 2³ = 157478281 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (157478281) 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, 1381332 + ... + 1381445.

It is an arithmetic number, because the mean of its divisors is an integer number (27627780).

Almost surely, 2^157478289 is an apocalyptic number.

157478289 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

157478289 is a deficient number, since it is larger than the sum of its proper divisors (63543951).

157478289 is a wasteful number, since it uses less digits than its factorization.

157478289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762799.

The product of its digits is 1128960, while the sum is 51.

The square root of 157478289 is about 12549.0353812554. The cubic root of 157478289 is about 540.0163335252.

The spelling of 157478289 in words is "one hundred fifty-seven million, four hundred seventy-eight thousand, two hundred eighty-nine".