145574978 has 16 divisors (see below), whose sum is σ = 232878240. Its totient is φ = 68010816.

The previous prime is 145574951. The next prime is 145575011. The reversal of 145574978 is 879475541.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10676 + ... + 20127.

It is an arithmetic number, because the mean of its divisors is an integer number (14554890).

Almost surely, 2^145574978 is an apocalyptic number.

145574978 is a deficient number, since it is larger than the sum of its proper divisors (87303262).

145574978 is a wasteful number, since it uses less digits than its factorization.

145574978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30961.

The product of its digits is 1411200, while the sum is 50.

The square root of 145574978 is about 12065.4456196197. The cubic root of 145574978 is about 526.0522846050.

The spelling of 145574978 in words is "one hundred forty-five million, five hundred seventy-four thousand, nine hundred seventy-eight".