20954485 has 8 divisors (see below), whose sum is σ = 25758936. Its totient is φ = 16354560.

The previous prime is 20954467. The next prime is 20954497. The reversal of 20954485 is 58445902.

20954485 = T₉₂ + T₉₃ + ... + T₅₀₁.

It can be written as a sum of positive squares in 4 ways, for example, as 288369 + 20666116 = 537^2 + 4546^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20954485 - 2⁹ = 20953973 is a prime.

It is a Duffinian number.

It is a congruent 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, 50904 + ... + 51313.

It is an arithmetic number, because the mean of its divisors is an integer number (3219867).

Almost surely, 2^20954485 is an apocalyptic number.

It is an amenable number.

20954485 is a deficient number, since it is larger than the sum of its proper divisors (4804451).

20954485 is a wasteful number, since it uses less digits than its factorization.

20954485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102263.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 20954485 is about 4577.6069075446. The cubic root of 20954485 is about 275.6929521391.

The spelling of 20954485 in words is "twenty million, nine hundred fifty-four thousand, four hundred eighty-five".