45278305 has 8 divisors (see below), whose sum is σ = 54945000. Its totient is φ = 35815296.

The previous prime is 45278281. The next prime is 45278341. The reversal of 45278305 is 50387254.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9290304 + 35988001 = 3048^2 + 5999^2 .

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 45278305 - 2¹⁷ = 45147233 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50430 + ... + 51319.

It is an arithmetic number, because the mean of its divisors is an integer number (6868125).

Almost surely, 2^45278305 is an apocalyptic number.

It is an amenable number.

45278305 is a deficient number, since it is larger than the sum of its proper divisors (9666695).

45278305 is a wasteful number, since it uses less digits than its factorization.

45278305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101843.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 45278305 is about 6728.9155887112. The cubic root of 45278305 is about 356.4210841336.

The spelling of 45278305 in words is "forty-five million, two hundred seventy-eight thousand, three hundred five".