20753113 has 4 divisors (see below), whose sum is σ = 20857600. Its totient is φ = 20648628.

The previous prime is 20753101. The next prime is 20753119. The reversal of 20753113 is 31135702.

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 a de Polignac number, because none of the positive numbers 2^k-20753113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20753119) 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, 51945 + ... + 52342.

It is an arithmetic number, because the mean of its divisors is an integer number (5214400).

Almost surely, 2^20753113 is an apocalyptic number.

It is an amenable number.

20753113 is a deficient number, since it is larger than the sum of its proper divisors (104487).

20753113 is a wasteful number, since it uses less digits than its factorization.

20753113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104486.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 20753113 is about 4555.5584728988. The cubic root of 20753113 is about 274.8069741864.

Adding to 20753113 its reverse (31135702), we get a palindrome (51888815).

The spelling of 20753113 in words is "twenty million, seven hundred fifty-three thousand, one hundred thirteen".