45779881 has 4 divisors (see below), whose sum is σ = 52319872. Its totient is φ = 39239892.

The previous prime is 45779879. The next prime is 45779897. The reversal of 45779881 is 18897754.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18897754 = 2 ⋅9448877.

It is a cyclic number.

It is not a de Polignac number, because 45779881 - 2¹ = 45779879 is a prime.

It is a super-2 number, since 2×45779881² = 4191595008748322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45779831) 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, 3269985 + ... + 3269998.

It is an arithmetic number, because the mean of its divisors is an integer number (13079968).

Almost surely, 2^45779881 is an apocalyptic number.

It is an amenable number.

45779881 is a deficient number, since it is larger than the sum of its proper divisors (6539991).

45779881 is an equidigital number, since it uses as much as digits as its factorization.

45779881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6539990.

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

The square root of 45779881 is about 6766.0831357588. The cubic root of 45779881 is about 357.7323535564.

The spelling of 45779881 in words is "forty-five million, seven hundred seventy-nine thousand, eight hundred eighty-one".