1054550421 has 20 divisors (see below), whose sum is σ = 1608839232. Its totient is φ = 688072968.

The previous prime is 1054550417. The next prime is 1054550429. The reversal of 1054550421 is 1240554501.

1054550421 is a `hidden beast` number, since 105 + 4 + 550 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 1054550421 - 2² = 1054550417 is a prime.

It is a super-2 number, since 2×1054550421² = 2224153180862554482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1054550429) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 134695 + ... + 142308.

Almost surely, 2^1054550421 is an apocalyptic number.

It is an amenable number.

1054550421 is a deficient number, since it is larger than the sum of its proper divisors (554288811).

1054550421 is an equidigital number, since it uses as much as digits as its factorization.

1054550421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277062 (or 277053 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1054550421 is about 32473.8421040689. The cubic root of 1054550421 is about 1017.8625047980.

The spelling of 1054550421 in words is "one billion, fifty-four million, five hundred fifty thousand, four hundred twenty-one".