45987278 has 16 divisors (see below), whose sum is σ = 73211040. Its totient is φ = 21590016.

The previous prime is 45987257. The next prime is 45987287. The reversal of 45987278 is 87278954.

It is a super-2 number, since 2×45987278² = 4229659475698568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15758 + ... + 18446.

It is an arithmetic number, because the mean of its divisors is an integer number (4575690).

Almost surely, 2^45987278 is an apocalyptic number.

45987278 is a deficient number, since it is larger than the sum of its proper divisors (27223762).

45987278 is a wasteful number, since it uses less digits than its factorization.

45987278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211.

The product of its digits is 1128960, while the sum is 50.

The square root of 45987278 is about 6781.3920399871. The cubic root of 45987278 is about 358.2717525089.

The spelling of 45987278 in words is "forty-five million, nine hundred eighty-seven thousand, two hundred seventy-eight".