145278803 has 8 divisors (see below), whose sum is σ = 150890496. Its totient is φ = 139725000.

The previous prime is 145278799. The next prime is 145278823. The reversal of 145278803 is 308872541.

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

It is a cyclic number.

It is not a de Polignac number, because 145278803 - 2² = 145278799 is a prime.

It is a super-2 number, since 2×145278803² = 42211861202225618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145278823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9323 + ... + 19428.

It is an arithmetic number, because the mean of its divisors is an integer number (18861312).

Almost surely, 2^145278803 is an apocalyptic number.

145278803 is a deficient number, since it is larger than the sum of its proper divisors (5611693).

145278803 is a wasteful number, since it uses less digits than its factorization.

145278803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28945.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 145278803 is about 12053.1656837530. The cubic root of 145278803 is about 525.6952880047.

The spelling of 145278803 in words is "one hundred forty-five million, two hundred seventy-eight thousand, eight hundred three".