2054154521 has 4 divisors (see below), whose sum is σ = 2054914944. Its totient is φ = 2053394100.

The previous prime is 2054154497. The next prime is 2054154533. The reversal of 2054154521 is 1254514502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1254514502 = 2 ⋅627257251.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2054154521 is a prime.

It is a super-2 number, since 2×2054154521² = 8439101592289478882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2054154551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376145 + ... + 381566.

It is an arithmetic number, because the mean of its divisors is an integer number (513728736).

Almost surely, 2^2054154521 is an apocalyptic number.

It is an amenable number.

2054154521 is a deficient number, since it is larger than the sum of its proper divisors (760423).

2054154521 is an equidigital number, since it uses as much as digits as its factorization.

2054154521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760422.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 2054154521 is about 45322.7814790752. The cubic root of 2054154521 is about 1271.1916648809.

The spelling of 2054154521 in words is "two billion, fifty-four million, one hundred fifty-four thousand, five hundred twenty-one".