45161611 has 4 divisors (see below), whose sum is σ = 49267224. Its totient is φ = 41056000.

The previous prime is 45161561. The next prime is 45161617. The reversal of 45161611 is 11616154.

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 45161611 - 2¹⁷ = 45030539 is a prime.

It is a super-2 number, since 2×45161611² = 4079142216230642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45161617) 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, 2052790 + ... + 2052811.

It is an arithmetic number, because the mean of its divisors is an integer number (12316806).

Almost surely, 2^45161611 is an apocalyptic number.

45161611 is a deficient number, since it is larger than the sum of its proper divisors (4105613).

45161611 is a wasteful number, since it uses less digits than its factorization.

45161611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105612.

The product of its digits is 720, while the sum is 25.

The square root of 45161611 is about 6720.2389094436. The cubic root of 45161611 is about 356.1146240121.

Adding to 45161611 its reverse (11616154), we get a palindrome (56777765).

It can be divided in two parts, 4 and 5161611, that added together give a palindrome (5161615).

The spelling of 45161611 in words is "forty-five million, one hundred sixty-one thousand, six hundred eleven".