45067891 has 4 divisors (see below), whose sum is σ = 49164984. Its totient is φ = 40970800.

The previous prime is 45067873. The next prime is 45067927. The reversal of 45067891 is 19876054.

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

It is a cyclic number.

It is not a de Polignac number, because 45067891 - 2⁵ = 45067859 is a prime.

It is a super-2 number, since 2×45067891² = 4062229598375762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45067801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2048530 + ... + 2048551.

It is an arithmetic number, because the mean of its divisors is an integer number (12291246).

Almost surely, 2^45067891 is an apocalyptic number.

45067891 is a deficient number, since it is larger than the sum of its proper divisors (4097093).

45067891 is a wasteful number, since it uses less digits than its factorization.

45067891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097092.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 45067891 is about 6713.2623217032. The cubic root of 45067891 is about 355.8681154157.

The spelling of 45067891 in words is "forty-five million, sixty-seven thousand, eight hundred ninety-one".