45192021 has 8 divisors (see below), whose sum is σ = 68864064. Its totient is φ = 25824000.

The previous prime is 45191999. The next prime is 45192023. The reversal of 45192021 is 12029154.

45192021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45192021 - 2⁵ = 45191989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45191982 and 45192000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45192023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075980 + ... + 1076021.

It is an arithmetic number, because the mean of its divisors is an integer number (8608008).

Almost surely, 2^45192021 is an apocalyptic number.

It is an amenable number.

45192021 is a deficient number, since it is larger than the sum of its proper divisors (23672043).

45192021 is a wasteful number, since it uses less digits than its factorization.

45192021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152011.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 45192021 is about 6722.5010970620. The cubic root of 45192021 is about 356.1945371336.

The spelling of 45192021 in words is "forty-five million, one hundred ninety-two thousand, twenty-one".