45555491 has 4 divisors (see below), whose sum is σ = 47126400. Its totient is φ = 43984584.

The previous prime is 45555487. The next prime is 45555509. The reversal of 45555491 is 19455554.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45555491 - 2² = 45555487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45555691) 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, 785411 + ... + 785468.

It is an arithmetic number, because the mean of its divisors is an integer number (11781600).

Almost surely, 2^45555491 is an apocalyptic number.

45555491 is a deficient number, since it is larger than the sum of its proper divisors (1570909).

45555491 is a wasteful number, since it uses less digits than its factorization.

45555491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570908.

The product of its digits is 90000, while the sum is 38.

The square root of 45555491 is about 6749.4807948464. The cubic root of 45555491 is about 357.1469211957.

It can be divided in two parts, 455554 and 91, that multiplied together give a palindrome (41455414).

The spelling of 45555491 in words is "forty-five million, five hundred fifty-five thousand, four hundred ninety-one".