45920219 has 4 divisors (see below), whose sum is σ = 47161344. Its totient is φ = 44679096.

The previous prime is 45920191. The next prime is 45920221. The reversal of 45920219 is 91202954.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45920219 is a prime.

It is a super-2 number, since 2×45920219² = 4217333026015922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45920239) 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, 620507 + ... + 620580.

It is an arithmetic number, because the mean of its divisors is an integer number (11790336).

Almost surely, 2^45920219 is an apocalyptic number.

45920219 is a deficient number, since it is larger than the sum of its proper divisors (1241125).

45920219 is a wasteful number, since it uses less digits than its factorization.

45920219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241124.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 45920219 is about 6776.4458973713. The cubic root of 45920219 is about 358.0975229252.

The spelling of 45920219 in words is "forty-five million, nine hundred twenty thousand, two hundred nineteen".