20107550 has 24 divisors (see below), whose sum is σ = 37665000. Its totient is φ = 7986080.

The previous prime is 20107541. The next prime is 20107553. The reversal of 20107550 is 5570102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20107553) 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, 6101 + ... + 8799.

It is an arithmetic number, because the mean of its divisors is an integer number (1569375).

Almost surely, 2^20107550 is an apocalyptic number.

20107550 is a deficient number, since it is larger than the sum of its proper divisors (17557450).

20107550 is a wasteful number, since it uses less digits than its factorization.

20107550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860 (or 2855 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 20107550 is about 4484.1442884903. The cubic root of 20107550 is about 271.9274514559.

Adding to 20107550 its reverse (5570102), we get a palindrome (25677652).

The spelling of 20107550 in words is "twenty million, one hundred seven thousand, five hundred fifty".