20090552 has 8 divisors (see below), whose sum is σ = 37669800. Its totient is φ = 10045272.

The previous prime is 20090537. The next prime is 20090561. The reversal of 20090552 is 25509002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1255652 + ... + 1255667.

It is an arithmetic number, because the mean of its divisors is an integer number (4708725).

Almost surely, 2^20090552 is an apocalyptic number.

It is an amenable number.

20090552 is a deficient number, since it is larger than the sum of its proper divisors (17579248).

20090552 is a wasteful number, since it uses less digits than its factorization.

20090552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511325 (or 2511321 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 20090552 is about 4482.2485428633. The cubic root of 20090552 is about 271.8508048579.

Adding to 20090552 its reverse (25509002), we get a palindrome (45599554).

The spelling of 20090552 in words is "twenty million, ninety thousand, five hundred fifty-two".