745550 has 48 divisors (see below), whose sum is σ = 1583232. Its totient is φ = 259200.

The previous prime is 745543. The next prime is 745567. The reversal of 745550 is 55547.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

745550 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20132 + ... + 20168.

It is an arithmetic number, because the mean of its divisors is an integer number (32984).

2⁷⁴⁵⁵⁵⁰ is an apocalyptic number.

745550 is an abundant number, since it is smaller than the sum of its proper divisors (837682).

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

745550 is a wasteful number, since it uses less digits than its factorization.

745550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 745550 is about 863.4523727456. The cubic root of 745550 is about 90.6759800362.

The spelling of 745550 in words is "seven hundred forty-five thousand, five hundred fifty".