45781092 has 144 divisors (see below), whose sum is σ = 142107840. Its totient is φ = 12700800.

The previous prime is 45781091. The next prime is 45781093. The reversal of 45781092 is 29018754.

It is an interprime number because it is at equal distance from previous prime (45781091) and next prime (45781093).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (45781091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 216867 + ... + 217077.

It is an arithmetic number, because the mean of its divisors is an integer number (986860).

Almost surely, 2^45781092 is an apocalyptic number.

45781092 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45781092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71053920).

45781092 is an abundant number, since it is smaller than the sum of its proper divisors (96326748).

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

45781092 is a wasteful number, since it uses less digits than its factorization.

45781092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 45781092 is about 6766.1726256429. The cubic root of 45781092 is about 357.7355078536.

The spelling of 45781092 in words is "forty-five million, seven hundred eighty-one thousand, ninety-two".