45905619 has 4 divisors (see below), whose sum is σ = 61207496. Its totient is φ = 30603744.

The previous prime is 45905603. The next prime is 45905647. The reversal of 45905619 is 91650954.

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

It is not a de Polignac number, because 45905619 - 2⁴ = 45905603 is a prime.

It is a super-2 number, since 2×45905619² = 4214651711546322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45907619) 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, 7650934 + ... + 7650939.

It is an arithmetic number, because the mean of its divisors is an integer number (15301874).

Almost surely, 2^45905619 is an apocalyptic number.

45905619 is a deficient number, since it is larger than the sum of its proper divisors (15301877).

45905619 is a wasteful number, since it uses less digits than its factorization.

45905619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15301876.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 45905619 is about 6775.3685508613. The cubic root of 45905619 is about 358.0595674005.

The spelling of 45905619 in words is "forty-five million, nine hundred five thousand, six hundred nineteen".