45661603 has 12 divisors (see below), whose sum is σ = 49676448. Its totient is φ = 41951520.

The previous prime is 45661597. The next prime is 45661613. The reversal of 45661603 is 30616654.

It is not a de Polignac number, because 45661603 - 2²⁵ = 12107171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45661613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45301 + ... + 46297.

It is an arithmetic number, because the mean of its divisors is an integer number (4139704).

Almost surely, 2^45661603 is an apocalyptic number.

45661603 is a deficient number, since it is larger than the sum of its proper divisors (4014845).

45661603 is a wasteful number, since it uses less digits than its factorization.

45661603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294 (or 1281 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 45661603 is about 6757.3369754660. The cubic root of 45661603 is about 357.4240058856.

It can be divided in two parts, 45661 and 603, that added together give a palindrome (46264).

The spelling of 45661603 in words is "forty-five million, six hundred sixty-one thousand, six hundred three".