628522550 has 12 divisors (see below), whose sum is σ = 1169052036. Its totient is φ = 251409000.

The previous prime is 628522547. The next prime is 628522561. The reversal of 628522550 is 55225826.

It is a self number, because there is not a number n which added to its sum of digits gives 628522550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6285176 + ... + 6285275.

It is an arithmetic number, because the mean of its divisors is an integer number (97421003).

Almost surely, 2^628522550 is an apocalyptic number.

628522550 is a deficient number, since it is larger than the sum of its proper divisors (540529486).

628522550 is a wasteful number, since it uses less digits than its factorization.

628522550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12570463 (or 12570458 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 628522550 is about 25070.3520118885. The cubic root of 628522550 is about 856.5912252870.

The spelling of 628522550 in words is "six hundred twenty-eight million, five hundred twenty-two thousand, five hundred fifty".