2021654354 has 4 divisors (see below), whose sum is σ = 3032481534. Its totient is φ = 1010827176.

The previous prime is 2021654353. The next prime is 2021654357. The reversal of 2021654354 is 4534561202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4534561202 = 2 ⋅2267280601.

It can be written as a sum of positive squares in only one way, i.e., 1991569129 + 30085225 = 44627^2 + 5485^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2021654354.

It is not an unprimeable number, because it can be changed into a prime (2021654353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505413587 + ... + 505413590.

Almost surely, 2^2021654354 is an apocalyptic number.

2021654354 is a deficient number, since it is larger than the sum of its proper divisors (1010827180).

2021654354 is a wasteful number, since it uses less digits than its factorization.

2021654354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010827179.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 2021654354 is about 44962.8107884727. The cubic root of 2021654354 is about 1264.4518664470.

The spelling of 2021654354 in words is "two billion, twenty-one million, six hundred fifty-four thousand, three hundred fifty-four".