123553454 has 4 divisors (see below), whose sum is σ = 185330184. Its totient is φ = 61776726.

The previous prime is 123553439. The next prime is 123553457. The reversal of 123553454 is 454355321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454355321 = 7 ⋅64907903.

It is a self number, because there is not a number n which added to its sum of digits gives 123553454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123553457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30888362 + ... + 30888365.

It is an arithmetic number, because the mean of its divisors is an integer number (46332546).

Almost surely, 2^123553454 is an apocalyptic number.

123553454 is a deficient number, since it is larger than the sum of its proper divisors (61776730).

123553454 is an equidigital number, since it uses as much as digits as its factorization.

123553454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61776729.

The product of its digits is 36000, while the sum is 32.

The square root of 123553454 is about 11115.4601344254. The cubic root of 123553454 is about 498.0637838121.

The spelling of 123553454 in words is "one hundred twenty-three million, five hundred fifty-three thousand, four hundred fifty-four".