12621550 has 12 divisors (see below), whose sum is σ = 23476176. Its totient is φ = 5048600.

The previous prime is 12621547. The next prime is 12621569. The reversal of 12621550 is 5512621.

12621550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 126166 + ... + 126265.

It is an arithmetic number, because the mean of its divisors is an integer number (1956348).

Almost surely, 2^12621550 is an apocalyptic number.

12621550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12621550 is a deficient number, since it is larger than the sum of its proper divisors (10854626).

12621550 is a wasteful number, since it uses less digits than its factorization.

12621550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252443 (or 252438 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 12621550 is about 3552.6820854110. The cubic root of 12621550 is about 232.8292633156.

The spelling of 12621550 in words is "twelve million, six hundred twenty-one thousand, five hundred fifty".