45515020 has 24 divisors (see below), whose sum is σ = 95798304. Its totient is φ = 18164736.

The previous prime is 45515011. The next prime is 45515023. The reversal of 45515020 is 2051554.

It is a junction number, because it is equal to n+sod(n) for n = 45514982 and 45515000.

It is not an unprimeable number, because it can be changed into a prime (45515023) 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, 7404 + ... + 12076.

It is an arithmetic number, because the mean of its divisors is an integer number (3991596).

Almost surely, 2^45515020 is an apocalyptic number.

It is an amenable number.

45515020 is an abundant number, since it is smaller than the sum of its proper divisors (50283284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45515020 is a wasteful number, since it uses less digits than its factorization.

45515020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5169 (or 5167 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 45515020 is about 6746.4820462223. The cubic root of 45515020 is about 357.0411280547.

Adding to 45515020 its reverse (2051554), we get a palindrome (47566574).

The spelling of 45515020 in words is "forty-five million, five hundred fifteen thousand, twenty".