45655509 has 16 divisors (see below), whose sum is σ = 62959680. Its totient is φ = 29408640.

The previous prime is 45655507. The next prime is 45655513. The reversal of 45655509 is 90555654.

It is not a de Polignac number, because 45655509 - 2¹ = 45655507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45655507) 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, 11427 + ... + 14895.

It is an arithmetic number, because the mean of its divisors is an integer number (3934980).

Almost surely, 2^45655509 is an apocalyptic number.

It is an amenable number.

45655509 is a deficient number, since it is larger than the sum of its proper divisors (17304171).

45655509 is a wasteful number, since it uses less digits than its factorization.

45655509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3620.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 45655509 is about 6756.8860431415. The cubic root of 45655509 is about 357.4081045691.

It can be divided in two parts, 45655 and 509, that added together give a palindrome (46164).

The spelling of 45655509 in words is "forty-five million, six hundred fifty-five thousand, five hundred nine".