385755550 has 24 divisors (see below), whose sum is σ = 721165896. Its totient is φ = 153515040.

The previous prime is 385755547. The next prime is 385755553. The reversal of 385755550 is 55557583.

It is an interprime number because it is at equal distance from previous prime (385755547) and next prime (385755553).

It is a junction number, because it is equal to n+sod(n) for n = 385755497 and 385755506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385755553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9732 + ... + 29431.

It is an arithmetic number, because the mean of its divisors is an integer number (30048579).

Almost surely, 2^385755550 is an apocalyptic number.

385755550 is a deficient number, since it is larger than the sum of its proper divisors (335410346).

385755550 is a wasteful number, since it uses less digits than its factorization.

385755550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39372 (or 39367 counting only the distinct ones).

The product of its (nonzero) digits is 525000, while the sum is 43.

The square root of 385755550 is about 19640.6606304371. The cubic root of 385755550 is about 727.9542083160.

The spelling of 385755550 in words is "three hundred eighty-five million, seven hundred fifty-five thousand, five hundred fifty".