145454661 has 12 divisors (see below), whose sum is σ = 229201440. Its totient is φ = 88154280.

The previous prime is 145454657. The next prime is 145454663. The reversal of 145454661 is 166454541.

145454661 is a `hidden beast` number, since 1 + 4 + 54 + 546 + 61 = 666.

145454661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145454661 - 2² = 145454657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145454663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 734521 + ... + 734718.

It is an arithmetic number, because the mean of its divisors is an integer number (19100120).

Almost surely, 2^145454661 is an apocalyptic number.

145454661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145454661 is a deficient number, since it is larger than the sum of its proper divisors (83746779).

145454661 is a wasteful number, since it uses less digits than its factorization.

145454661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469256 (or 1469253 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 145454661 is about 12060.4585733711. The cubic root of 145454661 is about 525.9073181217.

The spelling of 145454661 in words is "one hundred forty-five million, four hundred fifty-four thousand, six hundred sixty-one".