1000552421 has 4 divisors (see below), whose sum is σ = 1091511744. Its totient is φ = 909593100.

The previous prime is 1000552393. The next prime is 1000552429. The reversal of 1000552421 is 1242550001.

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.

It is a cyclic number.

It is not a de Polignac number, because 1000552421 - 2²⁶ = 933443557 is a prime.

It is a super-2 number, since 2×1000552421² = 2002210294337922482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1000552393 and 1000552402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000552429) 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, 45479645 + ... + 45479666.

It is an arithmetic number, because the mean of its divisors is an integer number (272877936).

Almost surely, 2^1000552421 is an apocalyptic number.

1000552421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000552421 is a deficient number, since it is larger than the sum of its proper divisors (90959323).

1000552421 is an equidigital number, since it uses as much as digits as its factorization.

1000552421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90959322.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1000552421 is about 31631.5099386672. The cubic root of 1000552421 is about 1000.1841064361.

It can be divided in two parts, 10005 and 52421, that added together give a palindrome (62426).

The spelling of 1000552421 in words is "one billion, five hundred fifty-two thousand, four hundred twenty-one".