20553154 has 4 divisors (see below), whose sum is σ = 30829734. Its totient is φ = 10276576.

The previous prime is 20553139. The next prime is 20553179. The reversal of 20553154 is 45135502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45135502 = 2 ⋅22567751.

It can be written as a sum of positive squares in only one way, i.e., 18792225 + 1760929 = 4335^2 + 1327^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5138287 + ... + 5138290.

Almost surely, 2^20553154 is an apocalyptic number.

20553154 is a deficient number, since it is larger than the sum of its proper divisors (10276580).

20553154 is a wasteful number, since it uses less digits than its factorization.

20553154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10276579.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 20553154 is about 4533.5586463616. The cubic root of 20553154 is about 273.9215236923.

Adding to 20553154 its reverse (45135502), we get a palindrome (65688656).

The spelling of 20553154 in words is "twenty million, five hundred fifty-three thousand, one hundred fifty-four".