20753519 has 2 divisors, whose sum is σ = 20753520. Its totient is φ = 20753518.

The previous prime is 20753479. The next prime is 20753527. The reversal of 20753519 is 91535702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20753519 - 2¹² = 20749423 is a prime.

It is a super-2 number, since 2×20753519² = 861417101766722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20753119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10376759 + 10376760.

It is an arithmetic number, because the mean of its divisors is an integer number (10376760).

Almost surely, 2^20753519 is an apocalyptic number.

20753519 is a deficient number, since it is larger than the sum of its proper divisors (1).

20753519 is an equidigital number, since it uses as much as digits as its factorization.

20753519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 20753519 is about 4555.6030336279. The cubic root of 20753519 is about 274.8087662213.

The spelling of 20753519 in words is "twenty million, seven hundred fifty-three thousand, five hundred nineteen".