145259978 has 8 divisors (see below), whose sum is σ = 229357920. Its totient is φ = 68807340.

The previous prime is 145259963. The next prime is 145259981. The reversal of 145259978 is 879952541.

145259978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×145259978² = 42200922417120968, which contains 22 as substring.

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, 1911278 + ... + 1911353.

It is an arithmetic number, because the mean of its divisors is an integer number (28669740).

Almost surely, 2^145259978 is an apocalyptic number.

145259978 is a deficient number, since it is larger than the sum of its proper divisors (84097942).

145259978 is a wasteful number, since it uses less digits than its factorization.

145259978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822652.

The product of its digits is 907200, while the sum is 50.

The square root of 145259978 is about 12052.3847432780. The cubic root of 145259978 is about 525.6725807662.

The spelling of 145259978 in words is "one hundred forty-five million, two hundred fifty-nine thousand, nine hundred seventy-eight".