45511986 has 48 divisors (see below), whose sum is σ = 102566016. Its totient is φ = 13382688.

The previous prime is 45511967. The next prime is 45511997. The reversal of 45511986 is 68911554.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40711 + ... + 41813.

It is an arithmetic number, because the mean of its divisors is an integer number (2136792).

Almost surely, 2^45511986 is an apocalyptic number.

45511986 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 45511986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51283008).

45511986 is an abundant number, since it is smaller than the sum of its proper divisors (57054030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45511986 is a wasteful number, since it uses less digits than its factorization.

45511986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167 (or 1144 counting only the distinct ones).

The product of its digits is 43200, while the sum is 39.

The square root of 45511986 is about 6746.2571845431. The cubic root of 45511986 is about 357.0331945062.

The spelling of 45511986 in words is "forty-five million, five hundred eleven thousand, nine hundred eighty-six".