20053577 has 4 divisors (see below), whose sum is σ = 20110740. Its totient is φ = 19996416.

The previous prime is 20053573. The next prime is 20053601. The reversal of 20053577 is 77535002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2572816 + 17480761 = 1604^2 + 4181^2 .

It is a cyclic number.

It is not a de Polignac number, because 20053577 - 2² = 20053573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20053571) 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, 28052 + ... + 28757.

It is an arithmetic number, because the mean of its divisors is an integer number (5027685).

Almost surely, 2^20053577 is an apocalyptic number.

It is an amenable number.

20053577 is a deficient number, since it is larger than the sum of its proper divisors (57163).

20053577 is an equidigital number, since it uses as much as digits as its factorization.

20053577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57162.

The product of its (nonzero) digits is 7350, while the sum is 29.

The square root of 20053577 is about 4478.1220394268. The cubic root of 20053577 is about 271.6839294654.

Adding to 20053577 its reverse (77535002), we get a palindrome (97588579).

The spelling of 20053577 in words is "twenty million, fifty-three thousand, five hundred seventy-seven".