20532445 has 16 divisors (see below), whose sum is σ = 27066240. Its totient is φ = 14883264.

The previous prime is 20532437. The next prime is 20532461. The reversal of 20532445 is 54423502.

It is a cyclic number.

It is not a de Polignac number, because 20532445 - 2³ = 20532437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2514 + ... + 6883.

It is an arithmetic number, because the mean of its divisors is an integer number (1691640).

Almost surely, 2^20532445 is an apocalyptic number.

It is an amenable number.

20532445 is a deficient number, since it is larger than the sum of its proper divisors (6533795).

20532445 is a wasteful number, since it uses less digits than its factorization.

20532445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9444.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 20532445 is about 4531.2741033842. The cubic root of 20532445 is about 273.8294932572.

Adding to 20532445 its reverse (54423502), we get a palindrome (74955947).

The spelling of 20532445 in words is "twenty million, five hundred thirty-two thousand, four hundred forty-five".