45161530 has 16 divisors (see below), whose sum is σ = 81443880. Its totient is φ = 18030592.

The previous prime is 45161527. The next prime is 45161531. The reversal of 45161530 is 3516154.

It can be written as a sum of positive squares in 4 ways, for example, as 41229241 + 3932289 = 6421^2 + 1983^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45161495 and 45161504.

It is not an unprimeable number, because it can be changed into a prime (45161531) 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, 1722 + ... + 9658.

Almost surely, 2^45161530 is an apocalyptic number.

45161530 is a deficient number, since it is larger than the sum of its proper divisors (36282350).

45161530 is a wasteful number, since it uses less digits than its factorization.

45161530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8513.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 45161530 is about 6720.2328828695. The cubic root of 45161530 is about 356.1144111078.

Adding to 45161530 its reverse (3516154), we get a palindrome (48677684).

The spelling of 45161530 in words is "forty-five million, one hundred sixty-one thousand, five hundred thirty".