1000553401 has 4 divisors (see below), whose sum is σ = 1009732900. Its totient is φ = 991373904.

The previous prime is 1000553399. The next prime is 1000553453. The reversal of 1000553401 is 1043550001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1043550001 = 13 ⋅80273077.

It can be written as a sum of positive squares in 2 ways, for example, as 276889600 + 723663801 = 16640^2 + 26901^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000553401 - 2¹ = 1000553399 is a prime.

It is a super-2 number, since 2×1000553401² = 2002214216505333602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000553461) 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, 4589586 + ... + 4589803.

It is an arithmetic number, because the mean of its divisors is an integer number (252433225).

Almost surely, 2^1000553401 is an apocalyptic number.

It is an amenable number.

1000553401 is a deficient number, since it is larger than the sum of its proper divisors (9179499).

1000553401 is an equidigital number, since it uses as much as digits as its factorization.

1000553401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9179498.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1000553401 is about 31631.5254295458. The cubic root of 1000553401 is about 1000.1844329824.

The spelling of 1000553401 in words is "one billion, five hundred fifty-three thousand, four hundred one".