20562545 has 8 divisors (see below), whose sum is σ = 24930024. Its totient is φ = 16280064.

The previous prime is 20562539. The next prime is 20562559. The reversal of 20562545 is 54526502.

20562545 = T₃₆₀ + T₃₆₁ + ... + T₅₅₃.

It can be written as a sum of positive squares in 4 ways, for example, as 2380849 + 18181696 = 1543^2 + 4264^2 .

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 20562545 - 2⁶ = 20562481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20714 + ... + 21683.

It is an arithmetic number, because the mean of its divisors is an integer number (3116253).

Almost surely, 2^20562545 is an apocalyptic number.

It is an amenable number.

20562545 is a deficient number, since it is larger than the sum of its proper divisors (4367479).

20562545 is an equidigital number, since it uses as much as digits as its factorization.

20562545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42499.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 20562545 is about 4534.5942486622. The cubic root of 20562545 is about 273.9632367605.

The spelling of 20562545 in words is "twenty million, five hundred sixty-two thousand, five hundred forty-five".