122557650 has 24 divisors (see below), whose sum is σ = 303943344. Its totient is φ = 32682000.

The previous prime is 122557649. The next prime is 122557661. The reversal of 122557650 is 56755221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 408376 + ... + 408675.

It is an arithmetic number, because the mean of its divisors is an integer number (12664306).

Almost surely, 2^122557650 is an apocalyptic number.

122557650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122557650 is an abundant number, since it is smaller than the sum of its proper divisors (181385694).

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

122557650 is a wasteful number, since it uses less digits than its factorization.

122557650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817066 (or 817061 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 122557650 is about 11070.5758657804. The cubic root of 122557650 is about 496.7220909176.

The spelling of 122557650 in words is "one hundred twenty-two million, five hundred fifty-seven thousand, six hundred fifty".