20754953 has 4 divisors (see below), whose sum is σ = 20882448. Its totient is φ = 20627460.

The previous prime is 20754949. The next prime is 20754971. The reversal of 20754953 is 35945702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20754953 - 2² = 20754949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20754353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63503 + ... + 63828.

It is an arithmetic number, because the mean of its divisors is an integer number (5220612).

Almost surely, 2^20754953 is an apocalyptic number.

It is an amenable number.

20754953 is a deficient number, since it is larger than the sum of its proper divisors (127495).

20754953 is a wasteful number, since it uses less digits than its factorization.

20754953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127494.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 20754953 is about 4555.7604195129. The cubic root of 20754953 is about 274.8150955365.

The spelling of 20754953 in words is "twenty million, seven hundred fifty-four thousand, nine hundred fifty-three".