123553641 has 4 divisors (see below), whose sum is σ = 164738192. Its totient is φ = 82369092.

The previous prime is 123553613. The next prime is 123553667. The reversal of 123553641 is 146355321.

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 123553641 - 2⁷ = 123553513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123553599 and 123553608.

It is not an unprimeable number, because it can be changed into a prime (123553681) 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, 20592271 + ... + 20592276.

It is an arithmetic number, because the mean of its divisors is an integer number (41184548).

Almost surely, 2^123553641 is an apocalyptic number.

It is an amenable number.

123553641 is a deficient number, since it is larger than the sum of its proper divisors (41184551).

123553641 is an equidigital number, since it uses as much as digits as its factorization.

123553641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41184550.

The product of its digits is 10800, while the sum is 30.

The square root of 123553641 is about 11115.4685461298. The cubic root of 123553641 is about 498.0640350876.

The spelling of 123553641 in words is "one hundred twenty-three million, five hundred fifty-three thousand, six hundred forty-one".