45537638 has 4 divisors (see below), whose sum is σ = 68306460. Its totient is φ = 22768818.

The previous prime is 45537629. The next prime is 45537641. The reversal of 45537638 is 83673554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83673554 = 2 ⋅41836777.

It is a junction number, because it is equal to n+sod(n) for n = 45537595 and 45537604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11384408 + ... + 11384411.

It is an arithmetic number, because the mean of its divisors is an integer number (17076615).

Almost surely, 2^45537638 is an apocalyptic number.

45537638 is a deficient number, since it is larger than the sum of its proper divisors (22768822).

45537638 is a wasteful number, since it uses less digits than its factorization.

45537638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22768821.

The product of its digits is 302400, while the sum is 41.

The square root of 45537638 is about 6748.1581190722. The cubic root of 45537638 is about 357.1002603215.

The spelling of 45537638 in words is "forty-five million, five hundred thirty-seven thousand, six hundred thirty-eight".