1005055501 has 4 divisors (see below), whose sum is σ = 1022090400. Its totient is φ = 988020604.

The previous prime is 1005055489. The next prime is 1005055529. The reversal of 1005055501 is 1055505001.

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 a de Polignac number, because none of the positive numbers 2^k-1005055501 is a prime.

It is a super-2 number, since 2×1005055501² = 2020273120180722002, 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 (1005052501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8517361 + ... + 8517478.

It is an arithmetic number, because the mean of its divisors is an integer number (255522600).

Almost surely, 2^1005055501 is an apocalyptic number.

It is an amenable number.

1005055501 is a deficient number, since it is larger than the sum of its proper divisors (17034899).

1005055501 is an equidigital number, since it uses as much as digits as its factorization.

1005055501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17034898.

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 1005055501 is about 31702.6103183949. The cubic root of 1005055501 is about 1001.6823351613.

The spelling of 1005055501 in words is "one billion, five million, fifty-five thousand, five hundred one".