45557905 has 4 divisors (see below), whose sum is σ = 54669492. Its totient is φ = 36446320.

The previous prime is 45557903. The next prime is 45557921. The reversal of 45557905 is 50975554.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28772496 + 16785409 = 5364^2 + 4097^2 .

It is not a de Polignac number, because 45557905 - 2¹ = 45557903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45557903) 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, 4555786 + ... + 4555795.

It is an arithmetic number, because the mean of its divisors is an integer number (13667373).

Almost surely, 2^45557905 is an apocalyptic number.

It is an amenable number.

45557905 is a deficient number, since it is larger than the sum of its proper divisors (9111587).

45557905 is an equidigital number, since it uses as much as digits as its factorization.

45557905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9111586.

The product of its (nonzero) digits is 157500, while the sum is 40.

The square root of 45557905 is about 6749.6596210476. The cubic root of 45557905 is about 357.1532295273.

The spelling of 45557905 in words is "forty-five million, five hundred fifty-seven thousand, nine hundred five".