1000255501 has 16 divisors (see below), whose sum is σ = 1184567040. Its totient is φ = 826398720.

The previous prime is 1000255499. The next prime is 1000255507. The reversal of 1000255501 is 1055520001.

It is not a de Polignac number, because 1000255501 - 2¹ = 1000255499 is a prime.

It is a super-2 number, since 2×1000255501² = 2001022134561522002, 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 (1000255507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126280 + ... + 133966.

It is an arithmetic number, because the mean of its divisors is an integer number (74035440).

Almost surely, 2^1000255501 is an apocalyptic number.

It is an amenable number.

1000255501 is a deficient number, since it is larger than the sum of its proper divisors (184311539).

1000255501 is an equidigital number, since it uses as much as digits as its factorization.

1000255501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8364.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 1000255501 is about 31626.8161691941. The cubic root of 1000255501 is about 1000.0851597476.

Adding to 1000255501 its reverse (1055520001), we get a palindrome (2055775502).

The spelling of 1000255501 in words is "one billion, two hundred fifty-five thousand, five hundred one".