1201650550 has 48 divisors (see below), whose sum is σ = 2313570672. Its totient is φ = 464025600.

The previous prime is 1201650547. The next prime is 1201650557. The reversal of 1201650550 is 550561021.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201650557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195829 + ... + 201871.

It is an arithmetic number, because the mean of its divisors is an integer number (48199389).

Almost surely, 2^1201650550 is an apocalyptic number.

1201650550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201650550 is a deficient number, since it is larger than the sum of its proper divisors (1111920122).

1201650550 is a wasteful number, since it uses less digits than its factorization.

1201650550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6193 (or 6188 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1201650550 is about 34664.8316020719. The cubic root of 1201650550 is about 1063.1455601670.

The spelling of 1201650550 in words is "one billion, two hundred one million, six hundred fifty thousand, five hundred fifty".