45305278 has 4 divisors (see below), whose sum is σ = 67957920. Its totient is φ = 22652638.

The previous prime is 45305251. The next prime is 45305297. The reversal of 45305278 is 87250354.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11326318 + ... + 11326321.

It is an arithmetic number, because the mean of its divisors is an integer number (16989480).

Almost surely, 2^45305278 is an apocalyptic number.

45305278 is a deficient number, since it is larger than the sum of its proper divisors (22652642).

45305278 is a wasteful number, since it uses less digits than its factorization.

45305278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22652641.

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

The square root of 45305278 is about 6730.9195508489. The cubic root of 45305278 is about 356.4918453037.

The spelling of 45305278 in words is "forty-five million, three hundred five thousand, two hundred seventy-eight".