20551027 has 16 divisors (see below), whose sum is σ = 24883200. Its totient is φ = 16580160.

The previous prime is 20551019. The next prime is 20551043. The reversal of 20551027 is 72015502.

It is not a de Polignac number, because 20551027 - 2³ = 20551019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20550989 and 20551007.

It is not an unprimeable number, because it can be changed into a prime (20551007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24999 + ... + 25807.

It is an arithmetic number, because the mean of its divisors is an integer number (1555200).

Almost surely, 2^20551027 is an apocalyptic number.

20551027 is a deficient number, since it is larger than the sum of its proper divisors (4332173).

20551027 is a wasteful number, since it uses less digits than its factorization.

20551027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 20551027 is about 4533.3240563631. The cubic root of 20551027 is about 273.9120741908.

Adding to 20551027 its reverse (72015502), we get a palindrome (92566529).

It can be divided in two parts, 2055 and 1027, that multiplied together give a triangular number (2110485 = T₂₀₅₄).

The spelling of 20551027 in words is "twenty million, five hundred fifty-one thousand, twenty-seven".