145685157 has 16 divisors (see below), whose sum is σ = 196804608. Its totient is φ = 95851440.

The previous prime is 145685143. The next prime is 145685171. The reversal of 145685157 is 751586541.

It is an interprime number because it is at equal distance from previous prime (145685143) and next prime (145685171).

It is not a de Polignac number, because 145685157 - 2¹⁴ = 145668773 is a prime.

It is a super-2 number, since 2×145685157² = 42448329940229298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145685107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117732 + ... + 118962.

It is an arithmetic number, because the mean of its divisors is an integer number (12300288).

Almost surely, 2^145685157 is an apocalyptic number.

It is an amenable number.

145685157 is a deficient number, since it is larger than the sum of its proper divisors (51119451).

145685157 is a wasteful number, since it uses less digits than its factorization.

145685157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720.

The product of its digits is 168000, while the sum is 42.

The square root of 145685157 is about 12070.0106462256. The cubic root of 145685157 is about 526.1849660571.

The spelling of 145685157 in words is "one hundred forty-five million, six hundred eighty-five thousand, one hundred fifty-seven".