423553550 has 48 divisors (see below), whose sum is σ = 918765600. Its totient is φ = 145212480.

The previous prime is 423553547. The next prime is 423553577. The reversal of 423553550 is 55355324.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4802 + ... + 29498.

It is an arithmetic number, because the mean of its divisors is an integer number (19140950).

Almost surely, 2^423553550 is an apocalyptic number.

423553550 is an abundant number, since it is smaller than the sum of its proper divisors (495212050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423553550 is a wasteful number, since it uses less digits than its factorization.

423553550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24730 (or 24711 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 32.

The square root of 423553550 is about 20580.4166624488. The cubic root of 423553550 is about 750.9933799770.

The spelling of 423553550 in words is "four hundred twenty-three million, five hundred fifty-three thousand, five hundred fifty".