45167491 has 4 divisors (see below), whose sum is σ = 46388272. Its totient is φ = 43946712.

The previous prime is 45167483. The next prime is 45167531. The reversal of 45167491 is 19476154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19476154 = 2 ⋅9738077.

It is a cyclic number.

It is not a de Polignac number, because 45167491 - 2³ = 45167483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 1220743 = 45167491 / (4 + 5 + 1 + 6 + 7 + 4 + 9 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45167491.

It is not an unprimeable number, because it can be changed into a prime (45167461) 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, 610335 + ... + 610408.

It is an arithmetic number, because the mean of its divisors is an integer number (11597068).

Almost surely, 2^45167491 is an apocalyptic number.

45167491 is a deficient number, since it is larger than the sum of its proper divisors (1220781).

45167491 is a wasteful number, since it uses less digits than its factorization.

45167491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220780.

The product of its digits is 30240, while the sum is 37.

The square root of 45167491 is about 6720.6763796511. The cubic root of 45167491 is about 356.1300786064.

The spelling of 45167491 in words is "forty-five million, one hundred sixty-seven thousand, four hundred ninety-one".