45278831 has 8 divisors (see below), whose sum is σ = 50443680. Its totient is φ = 40354272.

The previous prime is 45278809. The next prime is 45278873. The reversal of 45278831 is 13887254.

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 45278831 - 2¹⁰ = 45277807 is a prime.

It is a super-2 number, since 2×45278831² = 4100345073453122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45272831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59675 + ... + 60428.

It is an arithmetic number, because the mean of its divisors is an integer number (6305460).

Almost surely, 2^45278831 is an apocalyptic number.

45278831 is a deficient number, since it is larger than the sum of its proper divisors (5164849).

45278831 is a wasteful number, since it uses less digits than its factorization.

45278831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120145.

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

The square root of 45278831 is about 6728.9546736473. The cubic root of 45278831 is about 356.4224643146.

The spelling of 45278831 in words is "forty-five million, two hundred seventy-eight thousand, eight hundred thirty-one".