45429181 has 4 divisors (see below), whose sum is σ = 51919072. Its totient is φ = 38939292.

The previous prime is 45429179. The next prime is 45429191. The reversal of 45429181 is 18192454.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 45429181 - 2¹ = 45429179 is a prime.

It is a super-2 number, since 2×45429181² = 4127620972661522, 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 (45429101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3244935 + ... + 3244948.

It is an arithmetic number, because the mean of its divisors is an integer number (12979768).

Almost surely, 2^45429181 is an apocalyptic number.

It is an amenable number.

45429181 is a deficient number, since it is larger than the sum of its proper divisors (6489891).

45429181 is an equidigital number, since it uses as much as digits as its factorization.

45429181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6489890.

The product of its digits is 11520, while the sum is 34.

The square root of 45429181 is about 6740.1172838460. The cubic root of 45429181 is about 356.8165330346.

The spelling of 45429181 in words is "forty-five million, four hundred twenty-nine thousand, one hundred eighty-one".