145661288 has 16 divisors (see below), whose sum is σ = 273253380. Its totient is φ = 72793728.

The previous prime is 145661279. The next prime is 145661293. The reversal of 145661288 is 882166541.

145661288 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 2 ways, for example, as 135536164 + 10125124 = 11642^2 + 3182^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19670 + ... + 26042.

Almost surely, 2^145661288 is an apocalyptic number.

It is an amenable number.

145661288 is a deficient number, since it is larger than the sum of its proper divisors (127592092).

145661288 is a wasteful number, since it uses less digits than its factorization.

145661288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9236 (or 9232 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 145661288 is about 12069.0218327750. The cubic root of 145661288 is about 526.1562278402.

The spelling of 145661288 in words is "one hundred forty-five million, six hundred sixty-one thousand, two hundred eighty-eight".