4891545 has 24 divisors (see below), whose sum is σ = 8603712. Its totient is φ = 2570400.

The previous prime is 4891519. The next prime is 4891547. The reversal of 4891545 is 5451984.

It is not a de Polignac number, because 4891545 - 2¹¹ = 4889497 is a prime.

4891545 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4891547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2430 + ... + 3960.

It is an arithmetic number, because the mean of its divisors is an integer number (358488).

Almost surely, 2^4891545 is an apocalyptic number.

4891545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4891545 is a deficient number, since it is larger than the sum of its proper divisors (3712167).

4891545 is a wasteful number, since it uses less digits than its factorization.

4891545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613 (or 1610 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 4891545 is about 2211.6837477361. The cubic root of 4891545 is about 169.7521763874.

The spelling of 4891545 in words is "four million, eight hundred ninety-one thousand, five hundred forty-five".