1054681621 has 8 divisors (see below), whose sum is σ = 1268790080. Its totient is φ = 856433088.

The previous prime is 1054681591. The next prime is 1054681651. The reversal of 1054681621 is 1261864501.

It is an interprime number because it is at equal distance from previous prime (1054681591) and next prime (1054681651).

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

It is not a de Polignac number, because 1054681621 - 2¹³ = 1054673429 is a prime.

It is a super-2 number, since 2×1054681621² = 2224706643350375282, 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 (1054681651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3964836 + ... + 3965101.

It is an arithmetic number, because the mean of its divisors is an integer number (158598760).

Almost surely, 2^1054681621 is an apocalyptic number.

It is an amenable number.

1054681621 is a deficient number, since it is larger than the sum of its proper divisors (214108459).

1054681621 is an equidigital number, since it uses as much as digits as its factorization.

1054681621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7929963.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 1054681621 is about 32475.8621286641. The cubic root of 1054681621 is about 1017.9047148938.

The spelling of 1054681621 in words is "one billion, fifty-four million, six hundred eighty-one thousand, six hundred twenty-one".