45855861 has 4 divisors (see below), whose sum is σ = 61141152. Its totient is φ = 30570572.

The previous prime is 45855857. The next prime is 45855863. The reversal of 45855861 is 16855854.

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 45855861 - 2² = 45855857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45855863) 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, 7642641 + ... + 7642646.

It is an arithmetic number, because the mean of its divisors is an integer number (15285288).

Almost surely, 2^45855861 is an apocalyptic number.

It is an amenable number.

45855861 is a deficient number, since it is larger than the sum of its proper divisors (15285291).

45855861 is a wasteful number, since it uses less digits than its factorization.

45855861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15285290.

The product of its digits is 192000, while the sum is 42.

The square root of 45855861 is about 6771.6955779184. The cubic root of 45855861 is about 357.9301513698.

The spelling of 45855861 in words is "forty-five million, eight hundred fifty-five thousand, eight hundred sixty-one".