1054538021 has 4 divisors (see below), whose sum is σ = 1056918912. Its totient is φ = 1052157132.

The previous prime is 1054537997. The next prime is 1054538059. The reversal of 1054538021 is 1208354501.

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: 1208354501 = 41 ⋅29472061.

It is a cyclic number.

It is not a de Polignac number, because 1054538021 - 2²² = 1050343717 is a prime.

It is a super-2 number, since 2×1054538021² = 2224100875469192882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1054538521) 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, 1189781 + ... + 1190666.

It is an arithmetic number, because the mean of its divisors is an integer number (264229728).

Almost surely, 2^1054538021 is an apocalyptic number.

It is an amenable number.

1054538021 is a deficient number, since it is larger than the sum of its proper divisors (2380891).

1054538021 is an equidigital number, since it uses as much as digits as its factorization.

1054538021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380890.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1054538021 is about 32473.6511806110. The cubic root of 1054538021 is about 1017.8585152481.

The spelling of 1054538021 in words is "one billion, fifty-four million, five hundred thirty-eight thousand, twenty-one".