45509554 has 8 divisors (see below), whose sum is σ = 68642028. Its totient is φ = 22628880.

The previous prime is 45509551. The next prime is 45509567. The reversal of 45509554 is 45590554.

It can be written as a sum of positive squares in 2 ways, for example, as 41796225 + 3713329 = 6465^2 + 1927^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×45509554² = 4142239010557832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45509551) 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, 62497 + ... + 63220.

Almost surely, 2^45509554 is an apocalyptic number.

45509554 is a deficient number, since it is larger than the sum of its proper divisors (23132474).

45509554 is a wasteful number, since it uses less digits than its factorization.

45509554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125900.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 45509554 is about 6746.0769340410. The cubic root of 45509554 is about 357.0268348614.

Adding to 45509554 its product of nonzero digits (90000), we get a palindrome (45599554).

The spelling of 45509554 in words is "forty-five million, five hundred nine thousand, five hundred fifty-four".