45123653 has 4 divisors (see below), whose sum is σ = 45137100. Its totient is φ = 45110208.

The previous prime is 45123649. The next prime is 45123679. The reversal of 45123653 is 35632154.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 31888609 + 13235044 = 5647^2 + 3638^2 .

It is a cyclic number.

It is not a de Polignac number, because 45123653 - 2² = 45123649 is a prime.

It is a super-2 number, since 2×45123653² = 4072288120128818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45123643) 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, 2951 + ... + 9947.

It is an arithmetic number, because the mean of its divisors is an integer number (11284275).

Almost surely, 2^45123653 is an apocalyptic number.

It is an amenable number.

45123653 is a deficient number, since it is larger than the sum of its proper divisors (13447).

45123653 is an equidigital number, since it uses as much as digits as its factorization.

45123653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13446.

The product of its digits is 10800, while the sum is 29.

The square root of 45123653 is about 6717.4141602256. The cubic root of 45123653 is about 356.0148254778.

The spelling of 45123653 in words is "forty-five million, one hundred twenty-three thousand, six hundred fifty-three".