45624609 has 12 divisors (see below), whose sum is σ = 66239316. Its totient is φ = 30260832.

The previous prime is 45624581. The next prime is 45624611. The reversal of 45624609 is 90642654.

45624609 is a `hidden beast` number, since 45 + 6 + 2 + 4 + 609 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25401600 + 20223009 = 5040^2 + 4497^2 .

It is not a de Polignac number, because 45624609 - 2¹² = 45620513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45624659) 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 11 ways as a sum of consecutive naturals, for example, 11094 + ... + 14639.

It is an arithmetic number, because the mean of its divisors is an integer number (5519943).

Almost surely, 2^45624609 is an apocalyptic number.

It is an amenable number.

45624609 is a deficient number, since it is larger than the sum of its proper divisors (20614707).

45624609 is a wasteful number, since it uses less digits than its factorization.

45624609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25936 (or 25933 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 45624609 is about 6754.5990998726. The cubic root of 45624609 is about 357.3274541858.

The spelling of 45624609 in words is "forty-five million, six hundred twenty-four thousand, six hundred nine".