45877891 has 4 divisors (see below), whose sum is σ = 47117872. Its totient is φ = 44637912.

The previous prime is 45877873. The next prime is 45877921. The reversal of 45877891 is 19877854.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19877854 = 2 ⋅9938927.

It is a cyclic number.

It is not a de Polignac number, because 45877891 - 2¹⁵ = 45845123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45877291) 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 3 ways as a sum of consecutive naturals, for example, 619935 + ... + 620008.

It is an arithmetic number, because the mean of its divisors is an integer number (11779468).

Almost surely, 2^45877891 is an apocalyptic number.

45877891 is a deficient number, since it is larger than the sum of its proper divisors (1239981).

45877891 is a wasteful number, since it uses less digits than its factorization.

45877891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239980.

The product of its digits is 564480, while the sum is 49.

The square root of 45877891 is about 6773.3220062241. The cubic root of 45877891 is about 357.9874609384.

The spelling of 45877891 in words is "forty-five million, eight hundred seventy-seven thousand, eight hundred ninety-one".