20514513 has 24 divisors (see below), whose sum is σ = 29098368. Its totient is φ = 12849088.

The previous prime is 20514503. The next prime is 20514521. The reversal of 20514513 is 31541502.

It is not a de Polignac number, because 20514513 - 2⁴ = 20514497 is a prime.

It is a super-4 number, since 4×20514513⁴ (a number of 30 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20514513.

It is not an unprimeable number, because it can be changed into a prime (20514503) 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 23 ways as a sum of consecutive naturals, for example, 118495 + ... + 118667.

It is an arithmetic number, because the mean of its divisors is an integer number (1212432).

Almost surely, 2^20514513 is an apocalyptic number.

It is an amenable number.

20514513 is a deficient number, since it is larger than the sum of its proper divisors (8583855).

20514513 is a wasteful number, since it uses less digits than its factorization.

20514513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 20514513 is about 4529.2949782499. The cubic root of 20514513 is about 273.7497537580.

The spelling of 20514513 in words is "twenty million, five hundred fourteen thousand, five hundred thirteen".