1055400001 has 8 divisors (see below), whose sum is σ = 1124602920. Its totient is φ = 986988288.

The previous prime is 1055399981. The next prime is 1055400007. The reversal of 1055400001 is 1000045501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 173606976 + 881793025 = 13176^2 + 29695^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1055400001 - 2²¹ = 1053302849 is a prime.

It is a super-2 number, since 2×1055400001² = 2227738324221600002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055400007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195046 + ... + 200383.

It is an arithmetic number, because the mean of its divisors is an integer number (140575365).

Almost surely, 2^1055400001 is an apocalyptic number.

It is an amenable number.

1055400001 is a deficient number, since it is larger than the sum of its proper divisors (69202919).

1055400001 is a wasteful number, since it uses less digits than its factorization.

1055400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395603.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1055400001 is about 32486.9204603945. The cubic root of 1055400001 is about 1018.1357724353.

Adding to 1055400001 its reverse (1000045501), we get a palindrome (2055445502).

The spelling of 1055400001 in words is "one billion, fifty-five million, four hundred thousand, one".