20551070 has 8 divisors (see below), whose sum is σ = 36991944. Its totient is φ = 8220424.

The previous prime is 20551067. The next prime is 20551073. The reversal of 20551070 is 7015502.

It is an interprime number because it is at equal distance from previous prime (20551067) and next prime (20551073).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20551073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1027544 + ... + 1027563.

It is an arithmetic number, because the mean of its divisors is an integer number (4623993).

Almost surely, 2^20551070 is an apocalyptic number.

20551070 is a deficient number, since it is larger than the sum of its proper divisors (16440874).

20551070 is a wasteful number, since it uses less digits than its factorization.

20551070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055114.

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

The square root of 20551070 is about 4533.3287990173. The cubic root of 20551070 is about 273.9122652309.

Adding to 20551070 its reverse (7015502), we get a palindrome (27566572).

It can be divided in two parts, 2055 and 1070, that added together give a 5-th power (3125 = 5⁵).

The spelling of 20551070 in words is "twenty million, five hundred fifty-one thousand, seventy".