45623649 has 4 divisors (see below), whose sum is σ = 60831536. Its totient is φ = 30415764.

The previous prime is 45623647. The next prime is 45623671. The reversal of 45623649 is 94632654.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 45623649 - 2¹ = 45623647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45623647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7603939 + ... + 7603944.

It is an arithmetic number, because the mean of its divisors is an integer number (15207884).

Almost surely, 2^45623649 is an apocalyptic number.

It is an amenable number.

45623649 is a deficient number, since it is larger than the sum of its proper divisors (15207887).

45623649 is a wasteful number, since it uses less digits than its factorization.

45623649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15207886.

The product of its digits is 155520, while the sum is 39.

The square root of 45623649 is about 6754.5280368061. The cubic root of 45623649 is about 357.3249479597.

The spelling of 45623649 in words is "forty-five million, six hundred twenty-three thousand, six hundred forty-nine".