20551060 has 24 divisors (see below), whose sum is σ = 43706880. Its totient is φ = 8115744.

The previous prime is 20551051. The next prime is 20551061. The reversal of 20551060 is 6015502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20551061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4924 + ... + 8083.

It is an arithmetic number, because the mean of its divisors is an integer number (1821120).

Almost surely, 2^20551060 is an apocalyptic number.

20551060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20551060 is an abundant number, since it is smaller than the sum of its proper divisors (23155820).

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

20551060 is a wasteful number, since it uses less digits than its factorization.

20551060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13095 (or 13093 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 20551060 is about 4533.3276960749. The cubic root of 20551060 is about 273.9122208030.

Adding to 20551060 its reverse (6015502), we get a palindrome (26566562).

The spelling of 20551060 in words is "twenty million, five hundred fifty-one thousand, sixty".