145556451 has 12 divisors (see below), whose sum is σ = 211247400. Its totient is φ = 96576480.

The previous prime is 145556447. The next prime is 145556479. The reversal of 145556451 is 154655541.

145556451 is a `hidden beast` number, since 1 + 4 + 5 + 5 + 5 + 645 + 1 = 666.

It is not a de Polignac number, because 145556451 - 2² = 145556447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145556441) 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 11 ways as a sum of consecutive naturals, for example, 36426 + ... + 40223.

It is an arithmetic number, because the mean of its divisors is an integer number (17603950).

Almost surely, 2^145556451 is an apocalyptic number.

145556451 is a deficient number, since it is larger than the sum of its proper divisors (65690949).

145556451 is a wasteful number, since it uses less digits than its factorization.

145556451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76866 (or 76863 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 145556451 is about 12064.6778241278. The cubic root of 145556451 is about 526.0299671612.

The spelling of 145556451 in words is "one hundred forty-five million, five hundred fifty-six thousand, four hundred fifty-one".