145574878 has 4 divisors (see below), whose sum is σ = 218362320. Its totient is φ = 72787438.

The previous prime is 145574851. The next prime is 145574879. The reversal of 145574878 is 878475541.

145574878 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 878475541 = 149 ⋅5895809.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145574879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36393718 + ... + 36393721.

It is an arithmetic number, because the mean of its divisors is an integer number (54590580).

Almost surely, 2^145574878 is an apocalyptic number.

145574878 is a deficient number, since it is larger than the sum of its proper divisors (72787442).

145574878 is an equidigital number, since it uses as much as digits as its factorization.

145574878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72787441.

The product of its digits is 1254400, while the sum is 49.

The square root of 145574878 is about 12065.4414755532. The cubic root of 145574878 is about 526.0521641510.

The spelling of 145574878 in words is "one hundred forty-five million, five hundred seventy-four thousand, eight hundred seventy-eight".