1021540054 has 8 divisors (see below), whose sum is σ = 1612958040. Its totient is φ = 483887376.

The previous prime is 1021540049. The next prime is 1021540057. The reversal of 1021540054 is 4500451201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021540057) 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, 13441279 + ... + 13441354.

It is an arithmetic number, because the mean of its divisors is an integer number (201619755).

Almost surely, 2^1021540054 is an apocalyptic number.

1021540054 is a deficient number, since it is larger than the sum of its proper divisors (591417986).

1021540054 is a wasteful number, since it uses less digits than its factorization.

1021540054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26882654.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1021540054 is about 31961.5402319726. The cubic root of 1021540054 is about 1007.1290735353.

Adding to 1021540054 its reverse (4500451201), we get a palindrome (5521991255).

The spelling of 1021540054 in words is "one billion, twenty-one million, five hundred forty thousand, fifty-four".