45944491 has 4 divisors (see below), whose sum is σ = 47186272. Its totient is φ = 44702712.

The previous prime is 45944471. The next prime is 45944519. The reversal of 45944491 is 19444954.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19444954 = 2 ⋅9722477.

It is a cyclic number.

It is not a de Polignac number, because 45944491 - 2¹³ = 45936299 is a prime.

It is a super-2 number, since 2×45944491² = 4221792506498162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45944411) 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, 620835 + ... + 620908.

It is an arithmetic number, because the mean of its divisors is an integer number (11796568).

Almost surely, 2^45944491 is an apocalyptic number.

45944491 is a deficient number, since it is larger than the sum of its proper divisors (1241781).

45944491 is a wasteful number, since it uses less digits than its factorization.

45944491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241780.

The product of its digits is 103680, while the sum is 40.

The square root of 45944491 is about 6778.2365700822. The cubic root of 45944491 is about 358.1606048843.

It can be divided in two parts, 4 and 5944491, that added together give a palindrome (5944495).

The spelling of 45944491 in words is "forty-five million, nine hundred forty-four thousand, four hundred ninety-one".