20554522 has 4 divisors (see below), whose sum is σ = 30831786. Its totient is φ = 10277260.

The previous prime is 20554517. The next prime is 20554529. The reversal of 20554522 is 22545502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12033961 + 8520561 = 3469^2 + 2919^2 .

It is not an unprimeable number, because it can be changed into a prime (20554529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5138629 + ... + 5138632.

Almost surely, 2^20554522 is an apocalyptic number.

20554522 is a deficient number, since it is larger than the sum of its proper divisors (10277264).

20554522 is a wasteful number, since it uses less digits than its factorization.

20554522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10277263.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 20554522 is about 4533.7095187054. The cubic root of 20554522 is about 273.9276008834.

The spelling of 20554522 in words is "twenty million, five hundred fifty-four thousand, five hundred twenty-two".