45785861 has 4 divisors (see below), whose sum is σ = 49948224. Its totient is φ = 41623500.

The previous prime is 45785851. The next prime is 45785863. The reversal of 45785861 is 16858754.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45785861 - 2⁶ = 45785797 is a prime.

It is a super-2 number, since 2×45785861² = 4192690135022642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45785863) 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, 2081165 + ... + 2081186.

It is an arithmetic number, because the mean of its divisors is an integer number (12487056).

Almost surely, 2^45785861 is an apocalyptic number.

It is an amenable number.

45785861 is a deficient number, since it is larger than the sum of its proper divisors (4162363).

45785861 is a wasteful number, since it uses less digits than its factorization.

45785861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4162362.

The product of its digits is 268800, while the sum is 44.

The square root of 45785861 is about 6766.5250313584. The cubic root of 45785861 is about 357.7479291490.

The spelling of 45785861 in words is "forty-five million, seven hundred eighty-five thousand, eight hundred sixty-one".