20745053 has 8 divisors (see below), whose sum is σ = 23931072. Its totient is φ = 17614656.

The previous prime is 20745047. The next prime is 20745059. The reversal of 20745053 is 35054702.

It is an interprime number because it is at equal distance from previous prime (20745047) and next prime (20745059).

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

It is a cyclic number.

It is not a de Polignac number, because 20745053 - 2⁴ = 20745037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20745059) 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, 13100 + ... + 14597.

It is an arithmetic number, because the mean of its divisors is an integer number (2991384).

Almost surely, 2^20745053 is an apocalyptic number.

It is an amenable number.

20745053 is a deficient number, since it is larger than the sum of its proper divisors (3186019).

20745053 is a wasteful number, since it uses less digits than its factorization.

20745053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27811.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 20745053 is about 4554.6737534098. The cubic root of 20745053 is about 274.7713934840.

Adding to 20745053 its reverse (35054702), we get a palindrome (55799755).

The spelling of 20745053 in words is "twenty million, seven hundred forty-five thousand, fifty-three".