45861491 has 8 divisors (see below), whose sum is σ = 49610064. Its totient is φ = 42144480.

The previous prime is 45861481. The next prime is 45861509. The reversal of 45861491 is 19416854.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45861491 - 2¹⁸ = 45599347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45861451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4820 + ... + 10721.

It is an arithmetic number, because the mean of its divisors is an integer number (6201258).

Almost surely, 2^45861491 is an apocalyptic number.

45861491 is a deficient number, since it is larger than the sum of its proper divisors (3748573).

45861491 is a wasteful number, since it uses less digits than its factorization.

45861491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15781.

The product of its digits is 34560, while the sum is 38.

The square root of 45861491 is about 6772.1112660676. Note that the first 3 decimals coincide. The cubic root of 45861491 is about 357.9447991832.

The spelling of 45861491 in words is "forty-five million, eight hundred sixty-one thousand, four hundred ninety-one".