145748457 has 32 divisors (see below), whose sum is σ = 225730560. Its totient is φ = 92851920.

The previous prime is 145748441. The next prime is 145748479. The reversal of 145748457 is 754847541.

It is not a de Polignac number, because 145748457 - 2⁴ = 145748441 is a prime.

It is a super-2 number, since 2×145748457² = 42485225435761698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145748857) 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 31 ways as a sum of consecutive naturals, for example, 53232 + ... + 55902.

It is an arithmetic number, because the mean of its divisors is an integer number (7054080).

Almost surely, 2^145748457 is an apocalyptic number.

It is an amenable number.

145748457 is a deficient number, since it is larger than the sum of its proper divisors (79982103).

145748457 is a wasteful number, since it uses less digits than its factorization.

145748457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770 (or 2764 counting only the distinct ones).

The product of its digits is 627200, while the sum is 45.

The square root of 145748457 is about 12072.6325629500. The cubic root of 145748457 is about 526.2611639031.

It can be divided in two parts, 1457484 and 57, that added together give a palindrome (1457541).

The spelling of 145748457 in words is "one hundred forty-five million, seven hundred forty-eight thousand, four hundred fifty-seven".