45515442 has 32 divisors (see below), whose sum is σ = 107625600. Its totient is φ = 12555648.

The previous prime is 45515417. The next prime is 45515447. The reversal of 45515442 is 24451554.

It is not an unprimeable number, because it can be changed into a prime (45515447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17467 + ... + 19902.

It is an arithmetic number, because the mean of its divisors is an integer number (3363300).

Almost surely, 2^45515442 is an apocalyptic number.

45515442 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

45515442 is an abundant number, since it is smaller than the sum of its proper divisors (62110158).

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

45515442 is a wasteful number, since it uses less digits than its factorization.

45515442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37410.

The product of its digits is 16000, while the sum is 30.

The square root of 45515442 is about 6746.5133217092. The cubic root of 45515442 is about 357.0422315064.

Adding to 45515442 its reverse (24451554), we get a palindrome (69966996).

The spelling of 45515442 in words is "forty-five million, five hundred fifteen thousand, four hundred forty-two".