145577889 has 6 divisors (see below), whose sum is σ = 210279186. Its totient is φ = 97051920.

The previous prime is 145577881. The next prime is 145577911. The reversal of 145577889 is 988775541.

145577889 is a `hidden beast` number, since 1 + 4 + 557 + 7 + 8 + 89 = 666.

145577889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 143640225 + 1937664 = 11985^2 + 1392^2 .

It is not a de Polignac number, because 145577889 - 2³ = 145577881 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (145577881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8087652 + ... + 8087669.

It is an arithmetic number, because the mean of its divisors is an integer number (35046531).

Almost surely, 2^145577889 is an apocalyptic number.

It is an amenable number.

145577889 is a deficient number, since it is larger than the sum of its proper divisors (64701297).

145577889 is a wasteful number, since it uses less digits than its factorization.

145577889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16175327 (or 16175324 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 54.

The square root of 145577889 is about 12065.5662527707. The cubic root of 145577889 is about 526.0557909951.

The spelling of 145577889 in words is "one hundred forty-five million, five hundred seventy-seven thousand, eight hundred eighty-nine".